Value Collection MP40921 Extended Prong Cotter Pin

Product Description

The VALUE COLLECTION MP40921 is a Grade 2 steel extended prong cotter pin designed for general mechanical fastening applications. Measuring 1/8 inch in diameter and 1 inch in usable length, this pin features a zinc-plated finish that provides basic corrosion resistance in light-duty service environments. Extended prong cotter pins are inserted through a drilled hole in a bolt, shaft, or clevis pin and then bent to lock components in place, preventing axial movement. They are a standard hardware item installed by HVAC technicians, plumbers, electricians, and general maintenance professionals wherever positive mechanical retention is needed in an assembly.

This cotter pin is suited for residential and light commercial mechanical assemblies, linkage systems, clevis connections, and general fastening tasks. The extended prong design allows the legs to be bent back fully around a shaft or spread flat against a surface, providing a secure lock. It is a common component in control linkages, valve handles, fan blade assemblies, and similar hardware found in HVAC, plumbing, and general mechanical systems.

Key Features

• Extended prong design allows positive locking by bending prongs around shaft or component
• Grade 2 steel construction provides reliable tensile strength for light-duty fastening
• Zinc-plated finish offers basic protection against oxidation in dry to mildly humid environments
• 1/8 inch diameter and 1 inch usable length suits standard small-bore fastener applications
• Single-use fastener intended to be replaced any time the joint is disassembled

Compatibility

Designed as a standard-dimension replacement extended prong cotter pin for mechanical assemblies requiring a 1/8 inch diameter pin with 1 inch usable length.

Installation Notes

Cotter pins are installed by general maintenance technicians and tradespeople using basic hand tools such as needle-nose pliers. Always de-energize or shut down the equipment before working on any linkage or shaft assembly. Insert the pin fully through the hole so the head seats flush, then bend the prongs apart or back against the component to lock. Cotter pins are single-use fasteners and must not be straightened and reused after removal.