Value Collection MP30555 Hammerlock Cotter Pin Zinc Grade 2

Product Description

The VALUE COLLECTION MP30555 is a hammerlock cotter pin designed for securing clevis pins, shafts, and fastener assemblies in mechanical and industrial applications. Manufactured from Grade 2 steel with a zinc-plated finish, this pin measures 0.375 inches in diameter and 3 inches in usable length. The zinc plating provides basic corrosion resistance suitable for general-duty environments. Hammerlock-style cotter pins are favored by maintenance technicians and tradespeople who need a fast, tool-optional method of locking a pin in place without threaded fasteners or specialty tooling.

This cotter pin is commonly used in agricultural equipment, trailer hitches, HVAC equipment panels, pump linkages, and general mechanical assemblies where a positive-retention, removable fastener is required. It is appropriate for both light-duty field repairs and routine shop maintenance tasks. The hammerlock design allows the legs to lock around the fastener bore for a more secure hold compared to standard hairpin cotter styles, making it a practical choice in vibration-prone assemblies.

Key Features

• Hammerlock design locks securely around the pin bore for reliable retention in vibration-prone applications
• Grade 2 steel construction provides adequate shear and tensile strength for general-duty fastening
• Zinc-plated finish offers basic corrosion resistance for indoor and sheltered outdoor use
• 0.375 inch diameter and 3 inch usable length suit a wide range of standard clevis and shaft diameters
• Sold individually with a minimum order quantity of 5 units

Compatibility

Designed as a general-purpose hammerlock cotter pin for use in any mechanical assembly requiring a 0.375 inch diameter cotter pin with a 3 inch usable length.

Installation Notes

Installation requires no specialized tools in most applications — the hammerlock legs are spread and locked by hand or with basic pliers. Always de-energize or shut down the mechanical system before servicing any pinned linkage or fastener assembly. Inspect the mating bore and clevis pin for wear or damage before inserting a new cotter pin. Do not reuse a previously installed cotter pin, as deformation during removal reduces holding reliability.