RING, COTTER (P/N b427-1) - New Surplus

The b427-1 is a cotter ring for Robinson Helicopter R44 and R66 aircraft. This spring clip retains door pins and clevis pins in their installed positions, providing positive mechanical retention during flight and ground operations. Installation involves inserting the ring through the pin's hole and closing it securely.

The reusable design eliminates the need for replacement after each removal. Verify compatibility with your aircraft's Illustrated Parts Catalog before installation to ensure proper fit with your specific pin diameter and installation point.

What is the RING, COTTER (P/N b427-1)?

The b427-1 is a cotter ring for Robinson Helicopter R44 and R66 aircraft. This spring clip retains door pins and clevis pins in their installed positions, providing positive mechanical retention during flight and ground operations.

Does the b427-1 meet AN/MS/NAS aviation specifications?

Aircraft hardware is manufactured to military and aviation specifications. The RING, COTTER conforms to its applicable AN (Air Force-Navy), MS (Military Standard), or NAS (National Aerospace Standard) specification. Contact us for specific specification details.

What material is the b427-1 manufactured from?

Aviation hardware is available in various materials including cadmium-plated steel, stainless steel, aluminum alloy, and titanium depending on the application. Contact us for material certification and specifications for the b427-1.

Can I order the b427-1 in custom quantities?

Yes, we sell hardware in various quantities from single units to bulk lots. The RING, COTTER is available in: New Surplus. Submit an RFQ for volume pricing or call (904) 998-9101 for quantity availability.