SCREW, MACHINE, MUSHROOM HEAD (P/N A113-1B) - New Surplus

The A113-1B is a steel machine screw with a mushroom head profile designed for aircraft panel fastening. The wide, low-profile head distributes clamp load across thin sheet metal surfaces, reducing stress concentration. Conforms to SAE AS6535 specifications for mushroom-head fasteners.

Commonly used on Hawker 800/800XP/900XP airframes for secure panel retention. Installation requires applying specified torque per the aircraft maintenance manual and verifying part number against the Illustrated Parts Catalog before installation.

What is the SCREW, MACHINE, MUSHROOM HEAD (P/N A113-1B)?

The A113-1B is a steel machine screw with a mushroom head profile designed for aircraft panel fastening. The wide, low-profile head distributes clamp load across thin sheet metal surfaces, reducing stress concentration.

Does the A113-1B meet AN/MS/NAS aviation specifications?

Aircraft hardware is manufactured to military and aviation specifications. The SCREW, MACHINE, MUSHROOM HEAD 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 A113-1B 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 A113-1B.

Can I order the A113-1B in custom quantities?

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