Nuts TRIZ Cases

A non-circular tie nut locks by axial form-fit coupling to prevent rotation and keep wall formwork spacing stable from one accessible side.

Screw tips form depressions in the tap pipe to lock the tap against rotation, even when mounting nuts loosen over time.

Wings, snap arms, tabs, and extenders clamp thin panels tightly to stop retainer movement, misalignment, wear, and rattling noise.

Discrete lobes and facets create aggressive thread engagement that boosts pullout resistance and resists vibration, shock, and corrosion.

A counter-bored anchor plate transfers equipment loads to roof supports while preserving membrane and insulation integrity.

Self-forming pivot splines enable compact steering column adjustment while removing welding, pre-serrated brackets, and rotational lash.

Separate motors for shaft rotation and rearward translation improve blind rivet nut threading consistency and secure setting on workpieces.

A spiral guideway cam clamp replaces threaded tightening, enabling secure mounting rail attachment with defined pressure in confined assembly spaces.

A blunt convex shaft end with raised and recessed features boosts friction heat, cuts chip formation, and strengthens non-releasable joints.

A disc coupling with tongue-and-groove features absorbs shaft deformation, transmits rotation across misaligned threads, and eases wear element replacement.

Angular indexing aligns segmented internal threads for secure sealing and easy re-screwing in threaded fluid dispenser closures.

A pivotable nut and locking element enable fast coarse and fine rod adjustment, then clamp the threaded rod to prevent loosening and play.

Resilient arms grip threaded rods without rotation, while a wedge release enables fast detachment with strong load support.

Cylindrical rear plug-in portions replace conical compression to cut assembly force and achieve secure gap-free chipboard butt joints.

An embedded insert creates fastening holes or protrusions in cured fiber composites, avoiding screw damage and enabling part replacement.

An expandable jaw lock stops axial jaw movement during seismic loading, protecting threaded rod engagement and load transfer in cast-in anchors.

An oblique, non-circular collar locks into a shaped hole, allowing lateral adjustment without cages or welding, even on composite sheets.

A headed bolt with an adhesive-bonded sleeve delivers high tensile strength at shallow embedment while avoiding bond failure and concrete breakout.

When anchor rods project too little from concrete, a threaded bolt extender restores full nut engagement and connection strength.

A spring-biased pivoting block lets this blind fastener secure thick materials from one side while preserving hole size and installation orientation.

Welded studs replace threaded bores in fluid control bodies, cutting assembly time, material use, corrosion risk, and installation errors.

Independent drive couplings keep one locking hook actuated after arm fracture, preserving partial lock function and protecting the actuator.

A separate anti-rotation fastener locks a tap to the work surface, preventing loosening, wear-driven spin, and vandalism.

Laterally lipped joining clips connect leftover rivet tape to new spools, cutting rivet waste and avoiding production-line stoppages.

A spring-biased segmented nut expands and contracts to slide bidirectionally on a bolt, then fastens easily through axial cover movement.

An elastic compliant insert in a slotted screw maintains locking torque through cutter head cycles while enabling precise bevel gear cutter adjustment.

A non-circular collar in a complementary aperture allows lateral alignment while material overlap locks the element against axial separation.

A tapered cavity and hinged split wedge secure a profiled member quickly while preventing unintentional release during relative movement.

Spring-biased plunger pieces grip threaded rods in concrete form anchors without rotation, speeding ceiling sub-assembly installation and adjustment.

Magnetic attachment and multiple fastener grips let one spanner align and hold several chassis fasteners at once, cutting effort and worker exposure.

An axially actuated entraining blade engages wire thread inserts while allowing tool-free blade replacement to cut wear, maintenance, and downtime.

A tapered centering opening lets a fastening element self-align to projection tolerances, then re-engage positive locking for secure holding.

A non-rotatable anti-rotation element presets and preserves vehicle gap dimensions without gauges, cutting assembly effort and service reset time.

A creep-resistant alloy fastener keeps turbine housing joints tight above 250 bar and up to 650°C, avoiding retightening for over 100,000 hours.

Point-contact asymmetric thread geometry helps large trapezoidal fasteners resist vibration loosening without patches, pins, or deformation.

A two-part threaded attachment adds mounting threads to thin-walled coated components without impact, avoiding coating damage, corrosion risk, and slow assembly.

Top-down screw actuation expands flanges to lock aligned panels without rear access, while anti-rotation tabs prevent spinning.

Press-fitting a tolerance adjuster into a magnesium die casting boss avoids brittle window openings, cuts footprint, and improves joint stability.

A two-piece retainer and insert clamps composite or plastic panels securely, improving pull-out strength and installation speed across thickness tolerances.

Circumferentially offset inner and outer tabs reduce stress concentration and fracture risk while securely locking an aircraft engine nut and shaft.

A frangibly retained nut with stop blocks lets one molded plastic fastener clamp panels of different thicknesses with lower weight and complexity.

A one-piece sheet metal anchor stabilizes compression fastening on slatted floors while avoiding protrusions that can harm hogs.

A tapered polymer retainer speeds bolt installation and removal in tight spaces while maintaining strong, corrosion-resistant fastening.

Separate expansion fingers cut hoop stress during radial expansion, helping concrete screws stay engaged as boreholes widen under seismic cracking.

A spiral locking notch in the nut thread creates interference fit with the screw crest, boosting locking force and resisting loosening.

Evenly distributed pointed projections improve arc energy distribution, enabling strong welds across thin and thick sheets while limiting through-welding.

A mismatched bolt-nut thread pitch and nut hardness gradient create vibration-resistant locking with lower torque and less material.

Uniform thread pitches and larger clearances let the nut-ring lock rotate more freely, assemble easily, and resist vibration loosening.

Rotating wedge displacers clinch fasteners into shallow holes in very thin sheets, securing joints without visible surface blemishes.

Ball-driven radial expansion lets the anchor bite deeply into concrete, raising withdrawal resistance while limiting cone-type failure.