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The VALUE COLLECTION 42544 is a Grade 2 steel extended prong cotter pin with a zinc-plated finish. Cotter pins are mechanical fasteners used to secure pins, bolts, and shafts in assemblies, preventing unintended rotation or disassembly under vibration and load. This pin measures 4mm in diameter with a 32mm usable length. The extended prong design allows the legs to be bent outward after insertion, locking the pin firmly in place. The zinc plating provides a basic layer of corrosion resistance suited to general indoor and light-duty outdoor use. Mechanics, maintenance technicians, and general tradespeople commonly use these pins across a wide range of mechanical and structural assemblies.
Extended prong cotter pins see regular use in HVAC equipment linkages, electrical panel hinge assemblies, pump shaft retention, plumbing valve stems, and general industrial or light-duty structural connections. They are appropriate for applications where a positive, low-cost mechanical lock is needed on a clevis pin, castle nut, or drilled shaft. This 4mm by 32mm size suits mid-range shaft diameters and assembly depths common in residential and light commercial mechanical systems.
Designed as a general-purpose extended prong cotter pin suitable for mechanical assemblies requiring a 4mm diameter pin with a 32mm usable length across HVAC, plumbing, electrical, and light industrial applications.
De-energize and lock out any equipment before servicing assemblies that contain cotter pins. Insert the pin fully through the drilled hole until the head seats flush, then spread the prongs outward using needle-nose pliers to secure the pin in place. Cotter pins are typically single-use fasteners and should be replaced rather than reused after removal. Follow applicable equipment manufacturer guidelines and relevant mechanical codes for the system being serviced.
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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