WASHER (P/N S11846-4) - New Surplus

The S11846-4 is a flat washer that distributes clamp load and protects surfaces under bolt heads in aircraft bolted joints. This washer conforms to AN960 or NAS1149 specifications, depending on size and material requirements. Installed beneath bolt heads in airframe assemblies, fuselage structures, and component attachments, it prevents fastener heads from pulling through softer materials and maintains consistent pressure distribution.

Material and dimensions vary by engineering callout—verify the exact designation in the aircraft Illustrated Parts Catalog before installation. Torque and installation follow the applicable aircraft maintenance manual.

What is the WASHER (P/N S11846-4)?

The S11846-4 is a flat washer that distributes clamp load and protects surfaces under bolt heads in aircraft bolted joints. This washer conforms to AN960 or NAS1149 specifications, depending on size and material requirements.

Does the S11846-4 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 S11846-4 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 S11846-4.

Can I order the S11846-4 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.