BOLT,CLOSE TOLERANCE (P/N an173-6) - New Surplus

The AN173-6 is a close-tolerance hex-head bolt designed for precision-reamed airframe joints where shear loads transfer through the shank. It features UNF 10-32 threads and a tightly controlled grip diameter that ensures exact fit in reamed holes. Commonly specified for flight-control hinge fittings and critical structural connections on general and commercial aircraft.

Installation requires matching precision-reamed holes and compatible hardware. Torque and lock per aircraft maintenance manual or FAA AC 43.13-1B guidance to maintain structural integrity.

What is the BOLT,CLOSE TOLERANCE (P/N an173-6)?

The AN173-6 is a close-tolerance hex-head bolt designed for precision-reamed airframe joints where shear loads transfer through the shank. It features UNF 10-32 threads and a tightly controlled grip diameter that ensures exact fit in reamed holes.

Does the an173-6 meet AN/MS/NAS aviation specifications?

Aircraft hardware is manufactured to military and aviation specifications. The BOLT,CLOSE TOLERANCE 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 an173-6 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 an173-6.

Can I order the an173-6 in custom quantities?

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