Value Collection P20004 Locking Cotter Pin 5/16 in

Product Description

The VALUE COLLECTION P20004 is a locking cotter pin designed for secure fastening in mechanical assemblies where vibration or movement could cause standard fasteners to back out. Machined from RC 60-70 spring steel with a zinc-plated finish, this pin delivers hardness and corrosion resistance suited for industrial and trade applications. The shaft diameter measures 5/16 inches, overall length is 1.044 inches, and wire diameter is 0.047 inches. The locking ring diameter ranges from 0.32 to 0.33 inches, providing a positive retention fit when installed through a matching clevis pin or shaft.

This locking cotter pin is used across a wide range of mechanical, HVAC, and equipment-assembly applications where a positive-locking fastener is required. Common installation scenarios include linkage assemblies, valve stems, pump shafts, and equipment brackets where rotational or axial movement must be prevented. The zinc-plated finish offers light corrosion protection for indoor and sheltered outdoor environments. Packaged as a single unit with a minimum order quantity of 100 pieces, this pin suits both job-site use and stocking applications in maintenance shops and supply rooms.

Key Features

• RC 60-70 spring steel construction for hardness and durability under mechanical load
• Zinc-plated finish provides light corrosion resistance
• 5/16 inch shaft diameter with 0.047 inch wire diameter for precise fit
• Locking ring diameter of 0.32 to 0.33 inches ensures positive retention
• Overall length of 1.044 inches suits compact fastening applications
• Sold individually with a minimum order quantity of 100 units for shop stocking

Compatibility

Designed as an OEM-style replacement or standard-stock locking cotter pin for mechanical assemblies requiring a 5/16 inch shaft diameter fastener with a 0.32 to 0.33 inch locking ring diameter.

Installation Notes

Installation is typically performed by maintenance technicians, millwrights, or licensed trade professionals as part of a larger mechanical assembly. Ensure the mating shaft or clevis pin hole is clear of debris and properly sized before insertion. De-energize and lock out any associated equipment before servicing fasteners in moving assemblies, per applicable OSHA lockout/tagout requirements. Do not reuse cotter pins that have been previously bent or deformed.