Quarter-turn Fasteners

A quarter-turn fastener is a quick-release hardware mechanism that locks or unlocks by rotating a stud 90 degrees to engage a spring-loaded receptacle.

They allow tool-less panel access, reduce maintenance time, prevent over-tightening, and keep hardware captive on the panel face.

A complete assembly consists of a stud, a retaining washer or clip to hold the stud, and a receptacle mounted on the support frame.

Measure the combined total thickness of the outer panel, the inner frame lip, and any intervening sealing gaskets or washers.

Common styles include wing handles, bail handles, knurled thumb knobs, flush slotted drives, hex socket drives, and cross-recess drives.

They are widely used on race car body panels, aircraft inspection hatches, HVAC equipment doors, electronic server chassis, and machinery guards.

No, the internal spring mechanism in the receptacle creates a positive mechanical detent that holds the stud locked under heavy vibration.

Receptacles can be riveted, welded, clipped on, or pressed into pre-drilled holes depending on the frame material and installation space.

Passivated 300-series stainless steel provides superior rust resistance, while zinc-plated alloy steel offers maximum tensile and shear strength.

Yes, using a retaining washer holds the stud securely in the panel hole even when unlatched, preventing lost hardware.