BOLT (P/N an4-32a) - New Surplus

The AN4-32A is a 1/4-28 UNF hex-head airframe bolt manufactured to AN/NASM4 standards. This steel fastener provides structural fastening for airframe joints in certificated aircraft. The bolt features a hex head design for wrench engagement and reliable installation in high-stress applications.

Select grip length to match your stack thickness, then install per aircraft maintenance manual specifications. Verify part eligibility in the Illustrated Parts Catalog before use.

What is the BOLT (P/N an4-32a)?

The AN4-32A is a 1/4-28 UNF hex-head airframe bolt manufactured to AN/NASM4 standards. This steel fastener provides structural fastening for airframe joints in certificated aircraft.

Does the an4-32a meet AN/MS/NAS aviation specifications?

Aircraft hardware is manufactured to military and aviation specifications. The BOLT 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 an4-32a 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 an4-32a.

Can I order the an4-32a in custom quantities?

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