Bolts TRIZ Cases

Three-directional adjustment using threaded rings and eccentric bushes speeds aircraft structure assembly while avoiding shims and build-in stress.

Tool features at both ends let this fastening bolt be tightened or removed from either side, easing limited-access maintenance without extra parts.

An external manual release lets a half chin bar detach quickly without tools, reducing torsional injury risk and aiding rescue.

Stabilizer ribs and matching grooves spread torque, reduce rocking and misalignment, and help prevent fastener cam-out and material failure.

A nested collet body and sleeve fastener boosts shear resistance, protects the workpiece bore, and adapts to varied installation conditions.

A collet body sleeve and workpiece sleeve improve shear resistance, protect the workpiece bore, and support adaptable installation.

A camshaft-driven locking pin prevents vibration-induced tooth release while simplifying excavating tooth installation and removal.

A rotating socket and positioning block lock boards securely without over-tightening damage, while enabling fast release for maintenance.

Deflectable arms and a stopper wall secure circuit card assemblies without torque control, reducing overtightening damage and assembly time.

Segmented head steps punch wood fibers axially to reduce splitting and splintering while maintaining secure retention in wood.

An angled, variable-depth chip ditch improves debris discharge while preserving screw tail strength and reducing insertion resistance.

An asymmetric open-edge recess allows torque transfer only in one driver orientation, blocking standard tools while easing manufacture and dirt clearance.

Separate power charges, nails, and brackets cut inventory burden and waste by enabling salvage and reuse after fastener malfunctions.

Paired engagement features bite into stripped fastener head sides to transfer torque without slippage or thread damage.

A segmented six-lobe recess increases bit contact area to prevent slip, tolerate coatings, and protect both fastener and driver bit.

Alternating curved and driven recess sections increase bit contact area to maintain torque transfer and tolerate coating buildup.

Concave drive surfaces and inclined transitions guide coaxial engagement while transmitting high torque without damaging the profile.

An asymmetric fastener head allows engagement only at one angular position, blocking standard tools and reducing unauthorized removal.

A center drive engages first, then outboard receivers share higher torque to prevent cam-out, reduce screw head stress, and allow thinner heads.

A self-drilling high/low thread screw fastens metal, wood, and polymers with one design, reducing screw selection time and stock variety.

A movable actuating piece enables secure joining plus later vertical, lateral, or rotational release for reusable object assembly.

A sleeve and movable inner element drill the blind hole and expand the anchor in one step, cutting tools and mounting complexity.

A hollow body defines the potting space in honeycomb sandwich cores, preventing resin spread into damaged cells and excess weight.

A keyway-guided pin and retainer replace threaded engagement to speed precise assembly in tight spaces while keeping joints secure.

A modular explosive fastener tool uses adjustable nail lengths and reusable bracket components to cut inventory waste and clear misfires safely.

Complementary curved drive surfaces clamp screw and tool in coaxial alignment, preventing detachment and edge damage under high torque.

Segmented curved and driven recess sections increase bit contact area, preserving torque transfer despite tolerances and coating buildup.

An asymmetric eight-sided recess with curved driven walls improves bit fit, stabilizes torque transfer, and reduces corner and punch-tool damage.

Frangible hinge pins break before the polymer strip sections tear, reducing vehicle damage risk and making segmented rumble strips easier to repair.

An asymmetric driven recess improves square bit engagement, protects fastener corners, and maintains torque transmission despite tolerances.

An asymmetric four-wall screw head with curved driven sections boosts torque transfer while reducing protrusion wear and tool slip.

A lateral-perforation rotating mechanism improves hard disk and PCB access where rack partitions limit linear displacement and connector disengagement.

Custom fasteners with asymmetric recesses pair with a matching converter tool to block standard-tool removal and deter theft.

Serpentine guiding grooves rotate forging molds in precise steps, cutting linkage complexity, saving space, and improving mold cooling.

A single handle drives multiple Bowden-cable locking bolts at once, cutting access time and avoiding complex cable distributors.

A spherical bit and grooved receptacle maintain fastener coupling at up to 24° misalignment, enabling safer, faster robotic maintenance.

An actuating piece with elastic force lets a joint lock objects securely, then release or move them vertically, laterally, or rotationally.

Automated feeding, heating, transfer, and lubrication streamline hot upsetting of small fasteners while improving positioning, temperature control, and safety.

Radial engagement walls and partially circular head features improve tool grip, prevent slippage, and enable fastener removal without extractors.

A drill-bit recess in the fastener tip combines pre-drilling and installation, cutting deck post-to-beam assembly time and labor.

A radially expanding polymer fastener combines friction and positive locking to secure aligned component openings with easier, lower-cost assembly.

Imprinting a punch geometry into the screw head creates form-fitting torque transfer, reducing slippage and thread damage during medical instrument assembly.

A slotted one-piece support sleeve self-locks in a hollow body to absorb axial forces, prevent deformation, and avoid welding or clinching.

A multi-stage recess combines hex, six-lobed, and crosshead sockets so bone anchoring screws can be inserted or removed with standard drivers.

A split metal collar expands after insertion to stabilize FRP hole fastening while limiting adhesive creep and reinforced fiber damage.

A spring-loaded locking bolt secures the channel plate adapter in the rotor housing cover, simplifying replacement while resisting spinning forces and vibration.

A two-diameter positioning pin prevents hole-induced surface damage and improves alignment accuracy while reducing play between assembled parts.

An actuating piece and elastic element let joined objects stay secure yet be repositioned or separated without screws or permanent fasteners.

Reflectors and an identifier enable imaging-based alignment of structural parts, improving mounting precision while shortening installation time.

Dual-start threads, asymmetric notching, and a wedge reaming section cut installation torque while preserving thread strength and holding power.