MS24665-134 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 100-piece pack is suitable for aviation maintenance, repair, overhaul, and OEM production applications requiring dependable fastener retention.

Manufactured in accordance with the MS24665 specification, this cotter pin features a nominal 1/16 in. diameter and 3/4 in. overall length. It is commonly manufactured from corrosion-resistant stainless steel, providing excellent resistance to corrosion while maintaining the strength and flexibility required for secure installation in demanding aerospace environments.

The cotter pin is installed through a pre-drilled hole in a compatible fastener, after which the two legs are bent in opposite directions to create a positive mechanical lock. This proven fastening method prevents nuts, pins, and other secured components from loosening under vibration, cyclic loading, and normal aircraft operating conditions. MS24665 cotter pins are widely used in landing gear assemblies, flight control linkages, engine accessories, hydraulic systems, and numerous structural applications where secure mechanical retention is essential.

As with standard aircraft maintenance practices, cotter pins should always be replaced after removal to ensure continued locking performance and maintain the integrity of the assembly.

Key Features

- Part Number: MS24665-134
- Manufacturer: Military Standard (MS) / Approved Aviation Hardware Manufacturer
- Component: Cotter Pin (Split Pin)
- Material: Corrosion-resistant stainless steel
- Nominal Size: 1/16 in. diameter × 3/4 in. length
- Function: Secondary mechanical locking device for castellated nuts, clevis pins, and drilled fasteners
- Pack Quantity: 100 pieces
- Suitable for aircraft structural, landing gear, engine, hydraulic, and flight control applications requiring secure fastener retention