BOLT,CLOSE TOLERANCE (P/N an174-10) - New Surplus

The AN174-10 is a close-tolerance hex-head bolt with a drilled shank, manufactured from alloy steel per AN standard specifications. It features 1/4-28 UNF threads designed for precision-fit applications requiring exact hole alignment. Used in aircraft control-surface hinge assemblies and structural connections where tight, reamed fits are critical.

Installation requires torquing per the aircraft maintenance manual and securing with an approved locking device such as a castle nut and cotter pin. The drilled shank allows positive lock-wire or safety-pin retention, ensuring fastener security under vibration and flight loads.

What is the BOLT,CLOSE TOLERANCE (P/N an174-10)?

The AN174-10 is a close-tolerance hex-head bolt with a drilled shank, manufactured from alloy steel per AN standard specifications. It features 1/4-28 UNF threads designed for precision-fit applications requiring exact hole alignment.

Does the an174-10 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 an174-10 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 an174-10.

Can I order the an174-10 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.