Nuts TRIZ Cases

Spiral grooves and a conic bolt section deform the hollow member to raise fastening force and prevent work piece loosening.

A resilient clamp between U-shaped legs secures panel insertion, while an external nut simplifies manufacture and keeps the clip compact.

A rigid piercing anchor penetrates concrete or brick without predrilling, then receives a screw to lock heavy objects against pull-out.

A nested base and compensating element preserves adjustment travel in tight spaces while increasing joint load capacity and simplifying manufacture.

An eccentric two-part bolt locks through thread misalignment, enabling fast tightening in one bolt hole while resisting vibration loosening.

A twisted polylobular shank preserves material for each rib, improving anchoring security and press-out force in aluminum components.

Arcuate mating surfaces let a boom hinge rail clamp rotate to fit flange variation while transferring load away from the bolt.

Downturn flanges and resilient retaining legs shift load toward panel corners to reduce opening damage and improve push-in fastener engagement.

A flexible safety catch adds a torque threshold to jewelry screw closures, preventing accidental loosening without damaging soft precious-metal threads.

A multi-purpose pilot and lugs deform metal locally to lock into hollow tubes with higher push-out and rotational resistance.

Liquefied thermoplastic flows outward in a mounting hole, then re-solidifies to anchor connectors in lightweight sandwich panels without delamination.

A plug covering the fastener head replaces bulky flange hole layouts, improving compactness, arrangement flexibility, and explosion-proof sealing.

A sealed retention nut and magnetic or mechanical tool secure cartridge separators and enable safe retrieval without confined space entry.

A torsion spring biases a locking pin to stop vibration loosening while allowing repeated fastener installation and removal without damage.

Acute-angle gripping flaps and a flexible strap let a polymer channel nut holder resist vertical slipping while fitting varied nut thicknesses.

Separating barrel alignment from locknut torque keeps the gas tube or piston aligned while preventing barrel nut damage and rotation.

A tapered core expands a sleeve to create a threaded, depth-controlled manifold insert that also supports calibrated pressure metering.

A self-locking rail connector secures sectional door components at high elevations while preventing rotation, drift, and vibration loosening.

A dual-surface functional layer cuts friction and vibration while maintaining secure fixation and protecting sensitive assembly surfaces.

Magnets and meshing feet hold and rotate a locknut from one side, enabling single-worker connector installation in large cabinets.

A pre-installed cap and insert let fuel tank fasteners be attached from the opposite side while limiting electrical transmission and sparks.

Segmented lugs and positive locking elements hold a screw nut at high torque while reducing scratches, chips, and coating damage during assembly.

Sheet metal recesses and an elastic bracket keep nuts from twisting or falling in tight brake test stand assembly spaces.

A counterbore sleeve guides mandrel and fastener threads, prevents cross-threading, and visibly confirms proper rivet nut anchoring.

A flat head, radial whirl-stop arms, and a ring groove boost slip torque and extraction load, enabling reliable nut tightening on thin metal plates.

An inverted punching-part and bearing-surface layout lets a piercing nut clinch inside closed sections without creating surface recesses.

A removable U-shaped spring member locks threaded fasteners against vibration loosening while keeping the nut reusable and lower cost.

Modified thread contact and angle reduce tightening stress and seizure, enabling sealed ceramic or sapphire timepiece assemblies.

Stepped recessed threads lower screwing torque on thick coatings while removing film and maintaining stable electrical contact.

Blocking arms let the nut assembly adjust to varying component distances while holding a preset gap and preventing over-rotation.

Bendable lock ring tabs secure threaded tool connections against loosening without set screws, avoiding machining changes and downhole detachment.

Misaligned threads lock an oil filter adapter against torque, then realign to allow removal and reassembly during engine maintenance.

By reversing the kingpin and integrating the hex nut, the truck gains more obstacle clearance while reducing wear at the aluminum baseplate.

A helical wire insert and serrated nut structure resists reverse torque, improving installation, reuse, and torque consistency across cycles.

Switchable engagement dies and matched fitting portions simplify multi-step component-to-target assembly while improving speed and positioning precision.

Non-helical teeth let the nut slide on without tools, lock against vibration loosening, and reduce the need for multiple bolt lengths.

A reverse self-tapping screw and spiral-groove nut assembly enables fastening from either end while resisting vibration loosening.

A grooved nut and self-drilling bolt combine drilling and tightening in one pass, cutting panel installation time and tool changes.

Mechanical locks and stitching pins repair cracked cast metal without heat, distributing stress and creating a liquid-tight, gas-tight seal.

A rotating two-piece retainer spreads compression force, fits varying panel thicknesses, and speeds assembly with pre-installation.

A tensile wire links two nuts so loosening of one tightens the other, preventing vibration-driven fastener failure.

A segmented press-fit nut and dual-thread stud enable simultaneous tightening without base material deformation in steel-concrete fastening.

Three identical barcode segments around a screw nut face keep data readable from different angles and more resistant to installation damage.

A removable engagement die and matched fitting portions combine multiple assembly steps into one module, speeding part fitting while keeping compatibility.

A stepped counterplate and removable bolt block let formwork bolts be replaced quickly without special assemblies or extra tools.

Manual lever arms compress the spring cage for tool-free cage nut installation and removal while maintaining secure locking on a frame aperture.

Angular indexing and hinged thread tabs enable easy mounting and rescrewing on glass or plastic necks without thread deformation or sealing loss.

Complementary ramp-and-housing features lock the outer shell to prevent angular play, breakage, and fuel-leak risk after lightning strikes.

A countersunk floating anchor nut shifts the flange to handle misalignment, avoid bolt fouling, and improve blindside clearance.

A projecting fastener head forms a gas-tight press-in joint in sheet metal without piercing, pre-punching, or underside deformation.