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The VALUE COLLECTION KP80778 is a locking cotter pin designed to secure clevis pins, shaft assemblies, and fastener connections against accidental disengagement. It features a 1/4 inch shaft diameter, an overall length of 27/32 inches, and a wire diameter of 0.041 inches. The ring diameter ranges from 0.257 to 0.267 inches, providing a positive lock once seated. Constructed from RC 60-70 rated spring steel with a zinc-plated finish, this cotter pin delivers reliable corrosion resistance and the spring tension required to maintain clamping force under vibration. It is sold in a pack of 25. Installers across HVAC, plumbing, and mechanical trades use this type of fastener wherever positive pin retention is required in mechanical linkages and actuator assemblies.
This locking cotter pin is suited for use in light mechanical assemblies, clevis-to-rod connections, damper linkages, and actuator pivot points commonly found in residential and commercial HVAC systems, plumbing valve assemblies, and general mechanical equipment. The zinc-plated spring steel construction makes it appropriate for both indoor and mildly corrosive environments. The pack quantity of 25 supports service technicians who replace these fasteners routinely during maintenance calls or equipment rebuilds.
Designed as a standard locking cotter pin replacement for mechanical linkage and clevis pin assemblies requiring a 1/4 inch shaft diameter. Confirm shaft and ring diameter dimensions against the existing fastener before installation.
Installation requires no special tools beyond basic hand tools such as pliers. Always relieve mechanical load and de-energize any associated actuator or linkage before removing or installing cotter pins. Ensure the shaft pin is fully seated before engaging the cotter pin ring. Inspect for proper locking position after installation to confirm the pin will not back out under operating conditions.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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