BOLT,CLOSE TOLERANCE (P/N an174-12) - New Surplus

The AN174-12 is a close-tolerance hex head bolt with a drilled shank for positive locking. Manufactured from steel to Aeronautical Standard specifications, this fastener is designed for light-drive, precision-reamed joints requiring tight shear fit. Commonly used in aircraft control system hinge attachments and other precision structural applications.

Install in reamed holes and secure with the specified nut and torque values per maintenance manual requirements. The drilled shank accommodates safety wire or cotter pin locking methods to prevent vibration-induced loosening in flight operations.

What is the BOLT,CLOSE TOLERANCE (P/N an174-12)?

The AN174-12 is a close-tolerance hex head bolt with a drilled shank for positive locking. Manufactured from steel to Aeronautical Standard specifications, this fastener is designed for light-drive, precision-reamed joints requiring tight shear fit.

Does the an174-12 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 an174-12 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 an174-12.

Can I order the an174-12 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.