WASHER (P/N a-1638-11) - New Surplus

The a-1638-11 is a flat washer for aircraft bolted joints. This metal hardware distributes bearing loads under bolt heads and nuts while protecting parent material from damage. Conforms to AN960 or NAS1149 washer specifications common in aviation fastening.

Install under the bolt head or nut in airframe structures to provide smooth bearing surface and proper load distribution. Use per aircraft maintenance manual and FAA AC 43.13 guidance.

What is the WASHER (P/N a-1638-11)?

The a-1638-11 is a flat washer for aircraft bolted joints. This metal hardware distributes bearing loads under bolt heads and nuts while protecting parent material from damage.

Does the a-1638-11 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 a-1638-11 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 a-1638-11.

Can I order the a-1638-11 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.