BOLT STEEL (P/N an7-31) - New Surplus

The AN7-31 is a 7/16-20 UNF hex-head bolt manufactured from alloy steel to AN hardware standards. Rated for 125,000 psi tensile strength, this fastener provides structural attachment in aircraft engine mounts and high-stress applications. The bolt meets Air Force-Navy specifications for reliability in critical installations.

Installation requires torque verification per AC 43.13-1B guidance and the applicable aircraft maintenance manual. Verify bolt length against the Illustrated Parts Catalog before installation.

What is the BOLT STEEL (P/N an7-31)?

The AN7-31 is a 7/16-20 UNF hex-head bolt manufactured from alloy steel to AN hardware standards. Rated for 125,000 psi tensile strength, this fastener provides structural attachment in aircraft engine mounts and high-stress applications.

Does the an7-31 meet AN/MS/NAS aviation specifications?

Aircraft hardware is manufactured to military and aviation specifications. The BOLT STEEL 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 an7-31 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 an7-31.

Can I order the an7-31 in custom quantities?

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