Washers TRIZ Cases

A movable positioning member engages convex or concave support geometry to set tubular frame angles accurately before welding.

A recessed hammer-head fastener in a beaded mounting rail enables flush outer-surface fixing while preventing rotation and displacement.

A nested damping element inside the protruding rib and locating hole prevents wear-driven deformation, exposure, and pivot instability over time.

Inclined bearing teeth and boomerang saw-tooth serrations stabilize washer position, define bolt tension, and raise untightening torque.

A viscoelastic washer expands under the fastener head to shield decorative surfaces during powered installation and then releases for easy removal.

A tilted cavity floor guides a one-sided fastener through the joint at an angle, avoiding nearby part interference and eliminating clearance holes.

A relieved fastener head compresses and displaces substrate material to boost pull-through resistance while limiting surface fiber rupture.

A sleeve carries fastener preload while a parallel spring path biases removal, preserving joint integrity and easing disassembly.

A detented tubular bushing reinforces plastic mounting tabs, resisting fastener compression and preventing attachment-point deformation.

A one-piece lightweight spacer supports multiple fastener layouts in aircraft overhead bins while cutting machining waste, cost, and weight.

A rotatable transparent filling aid seals slot-like recesses during compound filling, enabling easy assembly and resisting lateral displacement.

A polymer-sealed metallic washer contains arcing and energized particle escape around lightning-protection fasteners in composite structures.

A compressible washer with a sealed fluid channel dispenses additive at installation, reducing waste, surface staining, and air exposure.

Controlled spacer deformation, shear failure, or belt rupture absorbs axial impact loads and protects flange bolts and flanges from damage.

An axially adjustable ring and elastic washer vary shaft friction, letting users tune twisting force for more convenient operation.

A molded polymer seal on a metallic washer blocks hot gases and plasma around composite fasteners, reducing arcing with simpler installation.

Longitudinal members with crest and valley projections are deformed into a washer shape to cut punching waste while dispersing stress.

A metal-fiber nonwoven cushion compresses with low repulsive force to correct member distortion and maintain parallelism in asymmetric assemblies.

A one-piece metal fastener with a drill head and steep self-tapping thread cuts installation steps while improving hold in insulation boards.

A thicker main body and frustoconical side let the washer absorb bolt load while keeping flat, stable contact with the limiter.

A two-washer geometry separates screw head fit from shank alignment to prevent cracking, torque loss, and pretension drop in screw joints.

A biasing collet and screw arrangement keeps clamp force steady during adhesive creep or extrusion, helping preserve stack height.

A split lock nut with opposed tabs and a threaded fastener keeps the strainer watertight yet releases cleanly when bonded under the sink.

A radially flanged tapered sleeve keeps bolt couplings aligned during mounting, reducing friction, tool use, and reinstallation risk.

A threaded male-female cage fastener clamps wire bars by friction, keeping pet accessories stable on dome and irregular cage surfaces.

Controlled spacer deformation absorbs compressive impact loads, protecting flange bolts and flanges while enabling lighter joint designs.

A spherical-head fixing element compensates radial and angular hole misalignment in deformed blanks, avoiding costly re-machining.

A conical clamping ring converts screw force into radial expansion to absorb axial and radial tolerances while keeping component alignment stable.

A compressible nut and spiral support create 360-degree blind-wall clamping with stronger lateral stability than toggle bolts.

A PAEK fastener with selected nitride additives balances stiffness, ductility, low weight, and corrosion resistance under harsh conditions.

Edge laser welding replaces full-area adhesive bonding in shim foils, preventing delamination and residue on curved, high-temperature joints.

Threaded cap engagement around a fastener washer speeds installation, controls excess sealant, and maintains electrical isolation in sensitive areas.

A compressible sealing member on a double-ended stud bolt blocks moisture at the grain bin stiffener joint, reducing corrosion and spoilage.

A drive-ring spacer with spherical contact compensates distance and angular offsets, enabling secure locking in confined vehicle spaces.

A nested rotatable bushing aligns fasteners on two perpendicular axes while limiting relative movement in rotor component joints.