Split Cotter Pins Stainless Steel Marine Grade (Pack of 20) (4mm x 32mm)

A4 316 MARINE GRADE STAINLESS STEEL – CORROSION RESISTANT IN SALTWATER & OUTDOOR USE Manufactured from A4 316 stainless steel — the premium marine-grade alloy containing molybdenum for superior resistance to saltwater corrosion, rust, and pitting compared to standard 304 grade. Suitable for permanent installations on boats, yachts, trailers, agricultural equipment, and coastal applications where lesser materials would corrode and fail within months. DIN 94 STANDARD – PRECISION FIT FOR SHACKLES, CLEVIS PINS & RIGGING Precision-manufactured to the DIN 94 international standard for consistent dimensions and reliable fit in standard hole sizes. Designed for use with bow shackles, D-shackles, clevis pins, rigging hardware, and any drilled-hole locking application. The two legs spread apart after insertion to lock the pin in place — preventing accidental removal under vibration, load, or sudden impact. 4 x 32mm – PACK OF 20 STAINLESS STEEL SPLIT COTTER PINS Each pack contains 20 individual 4mm x 32mm split cotter pins. The 4mm shank diameter fits drilled holes of 4mm nominal size, and the 32mm length suits applications where this protrusion provides enough material to bend the legs apart for secure locking. Ideal for marine rigging, trailer hardware, automotive, agricultural machinery, and engineering use. SECURE LOCKING – PREVENTS ACCIDENTAL SHACKLE OR PIN RELEASE Once inserted through the drilled hole, the two legs of the cotter pin are bent apart with pliers to lock the assembly firmly in place. This simple, proven mechanism prevents shackles from opening, clevis pins from sliding out, and retaining bolts from disengaging under vibration or load. Removed easily when needed by straightening and withdrawing — perfect for serviceable connections. VERSATILE – MARINE, TRAILER, AUTOMOTIVE, AGRICULTURAL & ENGINEERING USE Genuinely multi-purpose: covers boat shackle locking, yacht rigging hardware, trailer hitch and tow ball pins, caravan accessories, agricultural machinery retaining pins, automotive chassis fixings, motorcycle brake and suspension pins, ride-on mower deck attachments, and general engineering use. Available across our full range from 1.6mm to 6.3mm in multiple lengths — browse our store for the complete cotter pin range.