MS24665-134 Cotter Pin – Steel Aircraft Safety Pin
The MS24665-134 cotter pin is a standard aviation safety fastener designed to mechanically lock castellated nuts, clevis pins, and other critical components in aircraft assemblies. It is widely used in applications where vibration resistance and secure fastening are essential.
Manufactured from low carbon steel and cadmium plated for corrosion protection, this cotter pin ensures durability and long-term reliability. Its extended length (1-1/2″) makes it suitable for larger assemblies requiring additional reach and secure retention.
Produced in accordance with NASM24665 specifications, this cotter pin is widely used in general aviation, maintenance operations, and OEM applications.
Key Features
- Standard MS24665 cotter pin (AN380 equivalent)
- 1/16″ diameter x 1-1/2″ length
- Extended length for larger assemblies
- Cadmium plated steel (yellow chromate finish)
- Designed for vibration-resistant locking
- Manufactured to NASM24665 aerospace standards
- Produced by Western Wire
- Suitable for certified aircraft applications
Typical Applications
- Securing AN310 / MS21042 castellated nuts
- Clevis pin retention (AN394 / MS20392 series)
- Control linkages and flight control systems
- Landing gear and brake assemblies
- General aviation maintenance and repair
Commonly Used With
- AN310 castellated nuts
- AN bolts (drilled variants)
- Clevis pins (AN394 / MS20392)
- AN960 washers

Traceability & Certification
This product is supplied with full aviation-grade traceability, consistent with our sourcing standards across all aircraft parts. Documentation is physically included in the shipment for immediate reference and record-keeping.
✔ Manufactured by approved aerospace manufacturer (Western Wire)
✔ Produced in accordance with NASM24665 specification
✔ Full lot and batch traceability available
✔ Documentation included with each shipment




















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