Spring-steel R-clip (also called a hitchpin clip or hairpin cotter) used to secure a hitch pin, clevis pin, or other smooth pin in farm equipment, trailers, lawn-and-garden machinery, and industrial assemblies. The yellow zinc plating gives both corrosion resistance and high field visibility so a dropped clip is easy to spot in grass or shop dirt.

• Wire diameter: 0.243"
• Overall length: 4"
• Fits pin cross-hole: 17/64"
• Fits pin shaft diameter: 3/4" to 1"
• Material: Spring steel wire for repeatable retention
• Finish: Yellow zinc plated for corrosion resistance and visibility
• Pack: 2 clips per bag
• Manufacturer part: 01554
• Reusable - the spring leg flexes back to its retention shape

Sizing: Double HH publishes this clip as fitting a 17/64" cross-hole on pin shafts of 3/4" to 1". Measure the cross-hole rather than the pin body; a clip that rattles in an oversize hole will walk out under vibration, and the looped end has to seat against the pin shank so the spring leg can snap over it and hold. Note that despite the heavy 0.243" wire, the published fit tops out at a 1" shaft - this is a heavy-wire clip for pins up to 1", not a clip for larger-diameter pins.

Range: Double HH builds the yellow zinc hitchpin clip in wire diameters from 0.028" up to 0.310", so a heavier or lighter clip is available if this one does not suit your pin.

Installation tip: Slip the straight leg through the cross-hole until the looped end seats against the pin, then squeeze the spring leg to its parallel position so it grips the pin shank. To remove, pull straight back on the looped end - do not pry sideways with a screwdriver, which work-hardens the wire and shortens clip life. Keep a spare bag on the equipment - hitchpin clips are easy to lose during field service.