MS24665-140 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 package contains 100 cadmium-plated cotter pins suitable for aviation maintenance, repair, overhaul, and OEM production applications.

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 secure installation in demanding aerospace environments.

The cotter pin is installed through a pre-drilled hole in a compatible fastener, with the legs bent in opposite directions to create a positive locking mechanism that prevents rotation or accidental loosening. This proven retention method is widely used in landing gear assemblies, flight control systems, engine accessories, hydraulic components, and other critical aircraft applications where vibration resistance and fastener security are essential.

As a standard aviation hardware item, the MS24665-140 cotter pin should be replaced whenever removed during maintenance to ensure continued locking performance and compliance with accepted aircraft maintenance practices.

Key Features

- Part Number: MS24665-140
- 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