WASHER (P/N a-1638-5) - New Surplus

The A-1638-5 is a flat washer designed to distribute clamp load and protect bearing surfaces in bolted aircraft joints. This Cessna Aircraft Company part spreads fastener load across a wider area, reducing stress on components and maintaining joint integrity. Install the washer beneath bolt heads or nuts in accordance with AN/NAS fastener standards and aircraft maintenance practices.

The washer can also serve as a shim to adjust bolt preload and accommodate assembly tolerances. Follow the aircraft Illustrated Parts Catalog and AC 43.13-1B guidance for proper selection and installation in structural and mechanical assemblies.

What is the WASHER (P/N a-1638-5)?

The A-1638-5 is a flat washer designed to distribute clamp load and protect bearing surfaces in bolted aircraft joints. This Cessna Aircraft Company part spreads fastener load across a wider area, reducing stress on components and maintaining joint integrity.

Does the a-1638-5 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 a-1638-5 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 a-1638-5.

Can I order the a-1638-5 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.