90 results about "Metal hook" patented technology

The utility model discloses a light grillage grabbing mechanism which comprises a telescopic component and a claw component. And a claw component is arranged on the telescopic component, the telescopic component can drive the claw component to move, and the claw component can grab the grillage box. The grillage box storage device has the beneficial effects that the grillage box is grabbed by the metal hook claw component, so that the access operation is simplified, the grillage box is driven to rotate through the rotation of the basket storage rack instead of moving the whole grabbing mechanism to slightly move; then, the claw component is driven by the telescopic component to stretch out and draw back to the grillage box claw matching assembly, limiting is automatically achieved while rotation is conducted, and the grillage box is driven by the basket storage frame to conduct forward and reverse rotation, so that connection and release operation with the grillage box can be achieved; the control is more convenient; through the arrangement of the first-stage telescopic assembly, the stroke is prolonged through stroke superposition, the contact distance is long, meanwhile, the size is small, and the occupied space is small.

The utility model belongs to the technical field of argil plate curtain wall installation, and particularly relates to an aluminum alloy hanging piece facilitating adjustment of an argil plate, which comprises an outer wall, vertical keels are installed on one side of the outer wall at equal intervals, a transverse keel is fixedly installed on the tops of the vertical keels, a first metal hanging piece is fixedly installed on the top of the transverse keel, and a second metal hanging piece is fixedly installed on the top of the first metal hanging piece. An anti-skid piece is fixedly installed on the top of the first metal hanging piece, a first bolt is arranged on one side of the bottom of the vertical keel in a penetrating mode, a second metal hanging piece is arranged on the top of one side of the first metal hanging piece in a sliding mode, a screw hole is formed in the center of the top of the second metal hanging piece, and a second bolt is spirally embedded in the screw hole. A metal hook is integrally and fixedly installed at the bottom end of one side of the second metal hanging piece, and argil plates are embedded into the top end and the bottom end of the metal hook correspondingly. According to the utility model, the argil plate can be conveniently adjusted in multiple directions by screwing the bolt I and the bolt II, and meanwhile, the damaged argil plate can be conveniently replaced.

This utility model relates to the field of medical device technology and discloses a hand surgery positioning device, including a positioning mechanism, a cleaning mechanism at the bottom of the positioning mechanism, and a main body structure at the bottom of the cleaning mechanism. This utility model, by setting up a positioning mechanism and using a soft rubber strap, and utilizing the cooperation of hooks and stainless steel hooks, ensures that the hand is gently and firmly fixed during surgery, reducing surgical risks caused by unnecessary movement. The design of the stainless steel hooks allows for moderate expansion and contraction, avoiding discomfort caused by excessive restraint and improving the patient experience. The cleaning mechanism located below the positioning mechanism, with a body structure featuring planar drainage holes and channels, facilitates thorough rinsing of the hand before and after surgery. The drain pipe configuration further simplifies the liquid discharge process, maintaining a clean and tidy surgical environment and reducing the risk of infection.

The utility model relates to ACDC power supply technical field especially is a kind of modularization ACDC power supply interface extension device, including ACDC power supply ontology and interface extension mechanism, ACDC power supply ontology side is equipped with interface extension mechanism, interface extension mechanism bottom end fixedly connected with limiting plug-in post, limiting plug-in post is inserted in support subassembly, support subassembly includes the supporting plate, the limiting hole of limiting plug-in post is opened in supporting plate outside, the inter-plate slot is opened in supporting plate inside, and the installation component is fixedly connected with in supporting plate outside, the inter-plate hole is opened in supporting plate inside, and the hollow tube is fixedly connected with in inter-plate hole inside, and the buffer mechanism is installed in supporting plate inside, and installation component includes metal hooking piece, and rubber hollow column is adhesively fixed in metal hooking piece side, in the utility model, when device suffers external force vibration, can realize the efficient absorption and dissipation to vibration energy by compound buffer mechanism, prevent the damage due to stress concentration at connecting place, ensure that interface part is always in good condition, facilitate subsequent disassembly maintenance.

The utility model relates to the technical field of fitness equipment, and discloses an indoor and outdoor dual-purpose composite structure suspension fitness belt which comprises a metal hook, an annular connecting part is arranged at the lower end of the metal hook, a soft rubber door holder is arranged at the lower end of the annular connecting part, and a connecting woven belt is arranged on the annular connecting part and located on the outer side of the soft rubber door holder. After penetrating through the annular connecting part of the metal hook, the connecting braid extends towards the left side and the right side and wraps the soft rubber door holder, finally, a closed loop is formed through sewing, and the fitness belt body is arranged at the lower end of the connecting braid. According to the indoor and outdoor dual-purpose composite structure suspension fitness belt, the metal hook and the soft rubber door holder can be matched with each other to form a composite structure, indoor and outdoor use is achieved, a symmetrical stress structure is formed after the soft rubber door holder is wrapped by the connecting braid, and single-side stress concentration is avoided.

The utility model relates to a full-automatic metal hook knife forming machine. The full-automatic metal hook knife forming machine comprises a machine base and a traction mechanism, and is characterized in that a feeding seat is arranged in front of the traction mechanism, and a feeding through hole is formed in the feeding seat; a hooked knife forming mold is arranged in front of the feeding seat; a first forming mechanism is arranged in front of the feeding seat, and a metal wire can be bent on the ring part forming die by the first forming pressing die; a second forming mechanism is arranged in front of the first forming mechanism, and a second forming pressing die can press the metal wire above the ring part forming die and the hook part forming die; a third forming mechanism is arranged below the first forming mechanism; a fourth forming mechanism is arranged in front of the third forming mechanism; and a fifth forming mechanism is arranged in front of the hook part forming die and comprises a fifth forming pressing die and a fifth die holder, and the fifth forming pressing die can move above the step part and bend the front end of the metal wire upwards. According to the full-automatic metal hook knife forming machine, the metal hook knife manufacturing technology of automatic and standardized production can be achieved, the production efficiency and the product quality of the metal hook knife can be remarkably improved, and meanwhile the production cost is reduced.

The application provides a soft metal light film piece clamping device and a soft metal light film piece clamping method. The soft metal light film piece clamping device comprises a positioning block, a metal piece, a magnet, an elastic piece and a fixing piece. The positioning block is provided with a mounting groove, and the hollow area comprises a first accommodating cavity and a second accommodating cavity. The magnet is located in the mounting groove, and the magnet and the metal piece are magnetically attracted to each other to fix the soft metal light film piece in the mounting groove. The application sets a non-metal film on the contact part of the metal hook and the surface of the magnet to maximize the protection of the surface quality of the soft metal light film piece. The application uses the magnet, the metal hook and the annular rubber rope to jointly act on the soft metal light film piece to realize the clamping of the soft metal light film piece. Since this clamping method is adopted, the thickness, height and weight of the magnet are small, so the interference caused by subsequent laser processing, protective gas blowing and other processes is small, and the problem of large stress of the soft metal light film piece surface caused by the pressing block and the pressing plate is avoided.

The utility model relates to the technical field of engineering construction, and discloses a novel bailing hopper which comprises a drilling barrel and a plurality of auxiliary assemblies, the auxiliary assemblies are arranged on the outer wall of the drilling barrel and used for being matched with the drilling barrel to stably move downwards, the top of the drilling barrel is fixedly connected with an assembly frame, the outer side of the drilling barrel is rotationally connected with a rotating shaft, and the rotating shaft is fixedly connected with the assembly frame. A first rotating plate is fixedly connected to the outer side of the rotating shaft, a second rotating plate is rotatably connected to one side of the first rotating plate, two combination plates are fixedly connected to one side of the second rotating plate, and a plurality of dismounting assemblies are arranged on the outer sides of the combination plates. According to the utility model, the metal hook penetrates through the arc-shaped groove to be hooked into the unlocking hole, the metal hook is pulled to pull out the insertion block to release the limit after penetrating through the soil, and the cutting pick is pulled out, so that the replacement mode is convenient to operate, and compared with an integrated electric welding structure, the replacement mode can save a lot of cost, and compared with a rotary screwing-in assembly mode, the replacement efficiency is greatly improved. And during dismounting, the cutting pick is hardly influenced by the plugging of soil, so that the cutting pick replacement efficiency is improved.

The invention relates to a preparation method of a novel corrosion-resistant coating for a metal material, and belongs to the technical field of metal corrosion-resistant coatings. The preparation method comprises the following steps: sequentially adding 3, 3-diamino-4, 4-dicarboxyl biphenyl and cerous nitrate into a reaction kettle with a mixed solvent, carrying out ultrasonic treatment and heating reaction, distilling to remove the mixed solvent, and cooling to room temperature to obtain a cerium-containing precursor; the preparation method comprises the following steps: adding epoxy resin and epoxy cyclohexyl-polyhedral oligomeric silsesquioxane into solvent oil, then adding a cerium-containing precursor, carrying out a heating reaction, and carrying out ultrasonic treatment; continuously adding a curing agent, and stirring to obtain the novel corrosion-resistant coating. Coating the cleaned metal hook by using a dip-coating method, and drying at room temperature; the novel corrosion-resistant coating prepared by the preparation method disclosed by the invention is good in humidity and heat resistance and excellent in corrosion resistance.

1. The name of this design product: Beveled-edge wooden shovel (triangular metal hook). 2. Purpose of this product with design: This product with design is used for cooking. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

The utility model discloses a detachable safety belt, which belongs to the technical field of safety equipment and comprises a safety belt main body A and a safety belt main body B. The safety belt main body A is provided with a metal hook, and the safety belt main body B is provided with a metal opening matched with the metal hook. The safety belt body A and the safety belt body B are connected through a detachable assembly. According to the safety belt, a conventional safety belt is disassembled into the safety belt body A and the safety belt body B, the safety belt body A and the safety belt body B are connected through the metal hook and the detachable assembly, when the safety belt buckle is unlocked and fails due to an accident, the safety belt body A and the safety belt body B can be rapidly disassembled, and therefore a user can escape from a vehicle in the first time; and the survival probability of people in the vehicle is increased.

The utility model provides an H-shaped steel beam heat preservation fixing structure which comprises a steel beam body with the section of an H-shaped structure, pulling anchor nails which extend outwards and are evenly arranged are installed on the surfaces of the two sides of a web of the steel beam body, and metal hooks which can be elastically stretched are arranged at the edges of two wing plates of the steel beam body. Steel wire ropes are wound on the metal hooks on the edges of the two wing plates on one side of the web plate; the thermal insulation steel beam is simple in design structure and convenient to use, when thermal insulation materials are placed in the beam web of the steel beam body, the tying anchor nails can penetrate into the thermal insulation materials, the barbs can prevent the thermal insulation materials from being easily separated from the tying anchor nails, and then the steel wire ropes and the steel wire meshes on the periphery of the steel beam body are used for further reinforcing the thermal insulation materials. Therefore, the cracking and falling problems caused by thermal expansion and cold contraction of the thermal insulation material are effectively prevented, and the service life of the thermal insulation material is prolonged.

1. Name of the designed product: press metal hook. 2. Use of the designed product: hook for car. 3. Design points of the designed product: in shape. 4. Picture or photo showing the design points: perspective view.

The utility model discloses a high courtyard lamp installation structure which comprises a high courtyard lamp assembly, and the high courtyard lamp assembly comprises a high courtyard lamp body, cooling fins arranged on the high courtyard lamp body, a threaded cylinder arranged on the back face of the high courtyard lamp body and a cover plate arranged above the threaded cylinder. A hoisting assembly, the hoisting assembly comprises a hoisting hook attached to the surface of the cover plate, a threaded rod penetrating through the hoisting hook, a hanging hole formed in the side wall of the hoisting hook, a metal hook hooked into the hanging hole, a rectangular notch formed in the hook part of the metal hook, a notch groove formed in the tail end of the metal hook, a rotating shaft arranged in the notch groove and a connecting rod connected with the rotating shaft. The limiting block is connected to the tail end of the connecting rod; and the limiting groove is formed in the top of the hoisting hook. According to the high courtyard lamp, the high courtyard lamp assembly and the hoisting assembly are matched with each other, so that when the high courtyard lamp is hoisted and installed, the problem that the high courtyard lamp shakes is solved, and the use stability of the high courtyard lamp is improved.

The utility model discloses an elastic back buckle core and underwear thereof, the elastic back buckle core comprises a female buckle core and a male buckle core, the female buckle core is composed of a one-way elastic cloth layer and a plurality of metal buckle rings arranged on the one-way elastic cloth layer, and the metal buckle rings form a buckle ring array on one surface of the one-way elastic cloth layer; the male buckle core is composed of a male buckle cloth layer and a plurality of metal hook buckles arranged on the male buckle cloth layer, and the metal hook buckles correspond to the metal buckle rings. According to the core, the problems of discomfort and meat tightening caused by too small lower circumference of the style are solved, the wearing experience of the card code is improved, and the improper commodity code number caused by code hopping is greatly reduced. The fault tolerance of the whole process of a finished product is reduced, the number of suitable people is increased, and the comfort level is improved.

A marking tool configured to selectively couple to a tape measure may include a magnet, and an applicator comprising a marking surface for producing a mark of defined size and shape, the applicator configured to carry a colorant. A marking tool may include a coupling component attached to the applicator, wherein the coupling component comprises a cavity sized and shaped to receive the magnet; and a recess sized and shaped to receive a portion of a tape measure including a metal hook of the tape measure.

The invention discloses a lower cover disassembling and separating process of an electric energy meter, which relates to the technical field of electric energy meter disassembling and comprises the steps of discharging, disassembling a lower cover screw, recovering the lower cover screw, disassembling a single-phase nut, recovering the single-phase nut, disassembling a three-phase nut, recovering the three-phase nut, turning over the lower cover, disassembling a metal hook, recovering the metal hook, recovering the lower cover of the electric energy meter and the like. The positioning assemblies arranged on all the stations can rapidly recognize the positions of components, precise and rapid disassembling is achieved through cooperation of the positioning assemblies and the special disassembling assemblies, the disassembling period of the lower cover of the single electric energy meter is greatly shortened, all the disassembling stations are matched with the special recycling assemblies, the disassembled components can directly enter the corresponding collecting containers through the recycling assemblies, and the working efficiency is greatly improved. The problems that a traditional manual disassembling mode and a semi-automatic mechanical disassembling mode are low in disassembling efficiency and poor in adaptability for different types of electric energy meters, equipment parameters need to be debugged again when product types are replaced, and consequently the downtime of equipment is long are solved.

The application relates to the technical field of medical devices, in particular to a multifunctional turning-over pad, which comprises a cotton pad, the bottom of the cotton pad is provided with a supporting assembly, and the left and right sides of the supporting assembly are provided with transfer assemblies; the multifunctional turning-over pad can be used for providing buffer support for the body of a patient through a honeycomb-shaped through-hole structure of a breathable soft pad, and the overall supporting force is enhanced through an arc-shaped edge structure made of a high-molecular composite material of a hard supporting plate. Meanwhile, a tension belt and a bending plate are matched with metal hooks of the transfer assemblies through positioning holes, so that the supporting assembly can dynamically adjust the body position of the patient in the transfer process through the elastic nylon woven structure of the tension belt, thereby achieving the effect that the device can safely transfer and fix the body position of the patient through the synergistic effect of the supporting assembly and the transfer assembly.

The utility model relates to the technical field of metal hooks, and discloses an anti-bending metal hook which comprises a mounting plate, a hook body is fixedly connected outside the mounting plate, an anti-bending assembly is arranged outside the hook body, and a protection assembly is arranged outside the hook body. The anti-bending assembly comprises a mounting block, the mounting block is fixedly connected to the left side of the outer portion of the hook body, a reinforcing plate is rotatably connected to the interior of the mounting block, the bottom of the reinforcing plate is arranged at the top of the hook body, and springs are fixedly connected to the two sides of the top of the hook body correspondingly. The tops of the two springs are fixedly connected with spherical clamping blocks, the protection assembly comprises a protection leather sheath, and the hook body is sleeved with the protection leather sheath. According to the metal hook, the operation of preventing the metal hook from being bent when articles are hung is achieved, additional rigid support is provided through the reinforcing plate, the risk that the hook is bent is reduced, and therefore the service life of the metal hook is prolonged.

The utility model discloses a portable zongzi out-of-furnace hoisting framework which comprises a hoisting frame and a cooking cage connected with the hoisting frame through a metal rope, a quick-release hoisting tool is installed in the center of the top of the cooking cage and comprises an installation plate, a sleeve, a movable column and a limiting block, the installation plate is connected with the hoisting frame through the metal rope, the sleeve is fixedly connected to the top of the cooking cage, and the movable column is connected with the limiting block. The movable column is fixedly connected to the bottom of the mounting plate, and the limiting block is fixedly connected to one side of the movable column; according to the rice dumpling cooking device, when rice dumplings are cooked, a cooking cage is placed in a pot through the lifting frame, then a worker pushes an extension rod to enable a gear ring to be meshed with a gear, the gear can drive a movable column to enable a limiting block to move to a notch of a sleeve, then the worker moves a mounting plate upwards to enable the movable column to move out of the sleeve, and only the cooking cage is left in the pot; therefore, the cooking cage can be hoisted without using a metal hook, so that the metal hook can be prevented from rusting to pollute rice dumplings.

The invention relates to electroplating equipment for IGBT cooling fins and an electroplating production line, and belongs to the technical field of electroplating, the electroplating equipment comprises an electroplating bath, a fixing frame and a flow guide frame, a driving device is arranged below the electroplating bath, the driving device is used for agitating electroplating liquid in the electroplating bath to form pulse liquid flow flowing from bottom to top, the fixing frame is configured to be connected with a conveying steel belt, and the flow guide frame is connected with the conveying steel belt. The fixing frame is arranged on the electroplating bath and right faces an anode of the electroplating bath, a metal hook assembly is arranged on the fixing frame and comprises a fixing part and a deflection part, a blade assembly capable of driving the deflection part to deflect in a reciprocating mode is arranged on the deflection part so as to shake off bubbles on the cooling fins, the flow guide frame is located outside the cooling fins, and an annular micro-motion gap is formed between the flow guide frame and the cooling fins. The upper end and the lower end of the flow guide frame are each provided with a strip-shaped frame internally provided with a compression channel. The accelerating laminar flow capable of rising is arranged in the electroplating bath, the accelerating laminar flow scours bubbles attached to the needle root of the cooling fin, and it is guaranteed that the concentration of electroplating liquid in the vertical direction of the cooling fin is uniform.

A panel fastener has a casing, a hook, and cam assembly. The hook and cam assembly has a metallic hook and a cam assembly. The hook has a round cam mounting hole and two opposing side surfaces. The cam assembly has a round cam plate that includes a central camming portion conforming with the cam mounting hole. The cam plate also has an offset cam shaft formed with a socket. The cam assembly also has a metal spring plate coupled to the cam plate. The spring plate has two, peripheral wiper portions and a bearing portion positioned between the two wiper portions to form two clearing gaps therebetween. The wiper portions are positioned to scrape debris from the hook during rotation of the spring plate.

The utility model discloses a fair-faced formwork hoisting anti-collision device which comprises a PVC pipe, the outer wall of the PVC pipe is provided with a protective layer, the top of the PVC pipe is provided with a metal hoop, the outer wall of the metal hoop is provided with a metal hook, one side of the metal hoop is provided with a bolt, the bottom of the PVC pipe is provided with a through hole, and the bottom of the PVC pipe is provided with a through hole. The metal hook is provided with a through hole, a nylon wire is arranged in the through hole, the protective layer is made of felt cloth or soft fabric, the bolt is arranged at an opening of the metal hoop, and the nylon wire is connected with the PVC pipe through the through hole. The construction site turnover device is simple in structure, convenient to operate, reliable in performance and rapid in turnover, meets the working requirements of people, and is worthy of popularization and application.

To improve a connection structure of a hook part of a hook bar.SOLUTION: A hook bar is composed of a body pipe 2 including a hook part 3 at a tip end and a grip part at a base end. The hook part 3 is integrally formed from a metal hook body and a resin connection component. The hook body includes a lock part 60 and a stem part extending in a length direction of the body pipe 2. The connection component is formed by insert molding around the stem part. The connection component is composed of an insertion part 70 having a circular shape in its cross section, and a cap part 71 having a diameter larger than that of the insertion part 70. A ring-shaped insertion groove is formed between an inner peripheral surface of an edge part 711 of the cap part 71 and a base end portion of an outer peripheral surface of the insertion part 70. The insertion part 70 of the connection component is inserted from a tip end 23 of the body pipe 2 into a hollow part 22. A circumferential wall of the body pipe 2 and the outer peripheral surface of the insertion part 70 are secured by swaging (at a swage part 25) with a tip portion of the body pipe 2 fitted in the insertion groove.SELECTED DRAWING: Figure 3

The invention discloses a gypsum 3D printing fiber and metal material adding mold-free production method, and relates to the technical field of material 3D printing, the method comprises the specific steps of raw material pretreatment, AI model construction, 3D model treatment, gradient ratio printing and post-treatment and optimization; according to the method, through fusion of AI self-adaptive matching and 3D printing, the problems that in traditional gypsum component production, mold dependence is caused, the shape is limited, and the material matching is rigid are solved, mold-free production is achieved through application of the 3D printing technology, and meanwhile, the production flexibility and integrity are improved in combination with the synchronous implanting technology of the metal hook; the AI self-adaptive matching model dynamically adjusts a matching scheme of fibers and metal materials through a three-layer network structure in combination with regional feature weights and material compatibility constraints according to differential performance requirements of a bearing area, a decoration area and a transition area of a component, so that the structural strength of the bearing area is guaranteed, and the flexibility and the surface texture of the decoration area are also considered.

According to the technical scheme, the injection molding shoe tree convenient to position is characterized by comprising a shoe tree assembly; a clamping assembly; the clamping assembly is arranged on the shoe tree assembly; a positioning assembly; the positioning assembly is arranged on the shoe tree assembly; the magnetic part is used for adsorbing the metal hook core; the magnetic part is arranged on the shoe tree assembly; the positioning device has the advantage of being capable of adsorbing and positioning the metal hook core to prevent the metal hook core from deviating.

The utility model discloses a heavy object lifting tool, which relates to the technical field of heavy object carrying auxiliary tools and comprises a tubular metal rod, a rotating component is arranged in the tubular middle of the metal rod, and a metal hook is arranged below the rotating component. The lifting rod is used for two-person operation, the difficulty of heavy object carrying can be greatly reduced, the rotatable metal hook is used for being aligned to a proper lifting part of a heavy object, is slowly inserted and hooked, and stably applies force to lift the heavy object, if the posture of the heavy object needs to be adjusted in the process, the metal hook can flexibly drive the heavy object to rotate by means of the rotation performance of the thrust ball bearing, and the heavy object is lifted. An operator can easily and accurately carry a heavy object to a designated position, meanwhile, the flat structure can increase the contact area with the hand of the operator, the pressure of the hand is relieved, slipping and scratching are avoided, and heavy object carrying operation is efficiently completed.

The utility model discloses a pair of oblique nose pliers with an anti-static function, which comprises a pliers body, a lantern ring is fixedly connected to the outer side of the pliers body, a pin shaft is rotatably connected to the inner side of the lantern ring, and a connecting handle is fixedly connected to one side, far away from the pliers body, of the lantern ring. According to the device, the holding part is arranged, the metal cover plate is taken out of the hollow holding rod, then the metal cover plate is turned over, the metal hook is located on the side away from the wire, the metal hook, the rotating block and the wire are all made of conductive materials, the metal hook is connected with an external grounding facility, and static electricity generated on the clamp body can be effectively conducted and removed; static electricity is prevented from being accumulated on the pliers body, the spring is arranged to drive the wire and the metal cover plate to reset, the metal hook retracts into the hollow holding rod, at the moment, the magnetic attraction ring can attract the metal cover plate to be clamped on the surface of the hollow holding rod through magnetic force, and the use convenience of the diagonal nose pliers is improved.

The utility model relates to the technical field of insect damage prevention heat preservation device, disclose a kind of flower planting insect damage prevention heat preservation device, including high-density insect-proof netting heat preservation cover, the bottom of high-density insect-proof netting heat preservation cover is movably inserted with the support connecting cover extending to inside, the bottom of the support connecting cover is provided with assembly mechanism. The utility model is equipped with assembly mechanism, and the assembly between upper connecting sleeve and lower connecting sleeve is conveniently completed, and the dismounting operation is simple, so that cleaning maintenance is more convenient, the base area is conveniently cleaned, the change of different growth stages and management needs of plant is adapted, and after locking, the situation that the protection effect can be avoided to leave gap influence can be avoided;By being provided with hook mechanism, the device can be individually hung high-density insect-proof netting heat preservation cover and support connecting cover from top to carry out insect damage prevention heat preservation to flower, conveniently complete the adjustment and fixation of the use height of metal hook, and the device is conveniently hung.

Provided is a fastener that is unlikely to get caught on clothes or the like, enhances resistance generated during actions of engagement and disengagement between a hook and an eye, and enables a user to easily recognize that the engagement has correctly been performed. The fastener according to the present invention comprises: a metal hook 10; and a metal eye 20 with which the hook 10 is engaged and disengaged. The hook 10 includes: a hook part 11 having a U-shaped cross section; a plate-like part 12 extending from the hook part 11; and a first projection part 13 seamlessly continuing from the hook 10 in the whole circumference thereof. The eye 20 includes a second projection part 23 seamlessly continuing from the eye 20 in the whole circumference thereof. The first projection part 13 and the second projection part 23 come into contact with each other during actions of engagement and disengagement of the hook 10 with and from the eye 20.