Value Collection 40959 Extended Prong Cotter Pin 5/16x5 in

Product Description

The VALUE COLLECTION 40959 is an extended prong cotter pin designed to secure fasteners, clevis pins, and shaft assemblies in place during service and operation. Manufactured from Grade 2 steel with a zinc-plated finish, this pin measures 0.3125 inches in diameter and 5 inches in length. The extended prong design allows the legs to be bent outward after insertion, locking the pin securely in the hole and preventing back-out under vibration or load. Mechanics, millwrights, plumbers, and general maintenance technicians use this type of fastener across a wide range of mechanical and structural applications.

Extended prong cotter pins in this diameter and length are commonly used in agricultural equipment, industrial machinery, trailer hitch assemblies, HVAC linkages, and plumbing valve stem connections. The 0.3125-inch diameter suits medium-duty clevis and pivot pin bores. The zinc plating provides basic corrosion resistance for indoor and light outdoor environments. This pin is sold individually, with a minimum order quantity of 50 units, making it suitable for shop stocking or maintenance inventory replenishment.

Key Features

• Extended prong design locks securely when prongs are spread after insertion
• Grade 2 steel construction for reliable tensile strength in medium-duty applications
• Zinc-plated finish provides basic corrosion resistance
• 0.3125-inch diameter fits standard clevis and pivot pin bores of that size
• 5-inch length accommodates thicker assemblies and leaves adequate prong material for bending
• Minimum order quantity of 50 units supports shop stock and bulk maintenance use

Compatibility

Designed as a standard extended prong cotter pin for use in any application requiring a 0.3125-inch diameter, 5-inch long cotter pin in clevis joints, shaft retainers, and similar mechanical fastener assemblies.

Installation Notes

Installation requires no special tools beyond pliers for spreading the prongs after insertion. Ensure the receiving hole diameter matches the pin diameter before insertion to avoid a loose fit. Always spread both prongs fully after seating the pin to prevent backing out under vibration. Cotter pins are single-use fasteners and should be replaced, not reused, during reassembly.