BOLT,MACHINE (P/N an4h3a) - New Surplus

The AN4H3A is an AN/NASM-standard hex head machine bolt manufactured from alloy steel with a drilled head for safety wire installation. The undrilled shank accommodates self-locking nuts in aircraft structural assemblies. This fastener secures airframe brackets and structural components where reliable mechanical fastening is required.

Installation requires torque per aircraft maintenance manual specifications and safety-wiring per FAA AC 43.13-1B guidelines. Verify correct length and grip dimensions in the aircraft's Illustrated Parts Catalog before installation.

What is the BOLT,MACHINE (P/N an4h3a)?

The AN4H3A is an AN/NASM-standard hex head machine bolt manufactured from alloy steel with a drilled head for safety wire installation. The undrilled shank accommodates self-locking nuts in aircraft structural assemblies.

Does the an4h3a meet AN/MS/NAS aviation specifications?

Aircraft hardware is manufactured to military and aviation specifications. The BOLT,MACHINE 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 an4h3a 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 an4h3a.

Can I order the an4h3a in custom quantities?

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