BOLT,CLOSE TOLERANCE (P/N an175-22) - New Surplus

The AN175-22 is a close-tolerance hex-head bolt with a 5/16-24 UNF-3A threaded shank, manufactured from heat-treated alloy steel per Army-Navy standards. Designed for precision reamed joints in aircraft structures, this bolt maintains controlled diameter tolerances critical for shear-loaded applications. Commonly installed in landing gear attach fittings and other high-stress structural connections.

Installation requires a self-locking or castellated nut and torque application per AN/MIL specifications and aircraft maintenance manual requirements. The close-tolerance design ensures consistent fit in reamed holes without excessive play.

What is the BOLT,CLOSE TOLERANCE (P/N an175-22)?

The AN175-22 is a close-tolerance hex-head bolt with a 5/16-24 UNF-3A threaded shank, manufactured from heat-treated alloy steel per Army-Navy standards. Designed for precision reamed joints in aircraft structures, this bolt maintains controlled diameter tolerances critical for shear-loaded applications.

Does the an175-22 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 an175-22 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 an175-22.

Can I order the an175-22 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.