MS24665-136 Cotter Pin is a military standard aircraft fastening component designed to provide positive mechanical locking for castellated nuts, clevis pins, bolts, and other drilled fasteners used throughout aircraft structures and mechanical systems. This 200-piece pack is suitable for aviation maintenance, repair, overhaul, and OEM production environments where dependable hardware is essential.

Manufactured in accordance with the MS24665 specification, this cotter pin features a nominal 1/16 in. diameter and 1 in. overall length. It is commonly produced from corrosion-resistant stainless steel, providing excellent durability and resistance to corrosion while maintaining the strength and flexibility required for secure installation and reliable service in demanding aerospace applications.

During installation, the cotter pin is inserted through the pre-drilled hole of a compatible fastener, and its legs are bent in opposite directions to create a positive mechanical lock. This simple yet highly effective retention method helps prevent fasteners from loosening due to vibration, cyclic loading, and operational movement. MS24665 cotter pins are widely used in landing gear assemblies, flight control linkages, engine accessories, hydraulic systems, and other critical aircraft components.

As with accepted aircraft maintenance practices, cotter pins should be replaced whenever removed to maintain proper locking performance and ensure the continued integrity of the secured assembly.

Key Features

- Part Number: MS24665-136
- Manufacturer: Military Standard (MS) / Approved Aviation Hardware Manufacturer
- Component: Cotter Pin (Split Pin)
- Material: Corrosion-resistant stainless steel
- Nominal Size: 1/16 in. diameter × 1 in. length
- Function: Secondary mechanical locking device for castellated nuts, clevis pins, and drilled fasteners
- Pack Quantity: 200 pieces
- Suitable for aircraft structural, landing gear, engine, hydraulic, and flight control applications requiring secure fastener retention