MS24665-132 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 in critical aerospace applications. This package contains 100 cadmium-plated cotter pins intended for aircraft maintenance, overhaul, repair, and OEM production.

Manufactured in accordance with the MS24665 specification, this cotter pin features a nominal 1/16 in. diameter and 1/2 in. overall length. Constructed from high-strength steel with a durable cadmium-plated finish, it provides excellent corrosion resistance while maintaining the flexibility and mechanical strength required for reliable installation and long service life in demanding aviation environments.

When installed through the drilled hole of a compatible fastener, the legs are bent in opposite directions to create a secure mechanical lock that helps prevent fastener rotation or accidental loosening caused by vibration and cyclic loading. MS24665 cotter pins are widely used in landing gear assemblies, flight control systems, engine accessories, hydraulic components, and structural airframe installations where dependable fastener retention is essential.

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

Key Features

- Part Number: MS24665-132
- Manufacturer: Military Standard (MS) / Approved Aviation Hardware Manufacturer
- Component: Cotter Pin (Split Pin)
- Material: Cadmium-plated steel
- Nominal Size: 1/16 in. diameter × 1/2 in. length
- Function: Secondary mechanical locking device for castellated nuts, clevis pins, and drilled fasteners
- Finish: Corrosion-resistant cadmium plating
- Pack Quantity: 100 pieces
- Suitable for aircraft structural, landing gear, engine, hydraulic, and flight control applications requiring secure fastener retention