WASHER (P/N a1638-5) - New Surplus

The a1638-5 is a flat washer that distributes bearing loads under bolt heads in aircraft structural assemblies. This hardware component spreads clamping force across a wider surface area, protecting underlying materials from stress concentration and fastener pull-through. Manufactured to AN960 or NAS1149 aerospace standards, the washer maintains dimensional consistency for reliable joint performance.

Install under bolt heads on airframe brackets and structural connections per aircraft maintenance manual specifications and FAA AC 43.13-1B acceptable practices.

What is the WASHER (P/N a1638-5)?

The a1638-5 is a flat washer that distributes bearing loads under bolt heads in aircraft structural assemblies. This hardware component spreads clamping force across a wider surface area, protecting underlying materials from stress concentration and fastener pull-through.

Does the a1638-5 meet AN/MS/NAS aviation specifications?

Aircraft hardware is manufactured to military and aviation specifications. The WASHER 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 a1638-5 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 a1638-5.

Can I order the a1638-5 in custom quantities?

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