BOLT,CLOSE TOLERANCE (P/N an176-21) - New Surplus

The AN176-21 is a close tolerance hex head bolt with 3/8-24 UNF-3A thread specifications, manufactured from alloy steel per AN standards. This bolt secures shear-critical structural lug joints in aircraft frameworks where minimal clearance is required. The close tolerance design fits precision-reamed holes without play, maintaining structural integrity in high-stress applications.

Installation involves placing the bolt in reamed holes and torquing per aircraft maintenance manual specifications. Commonly used in general aviation and commercial aircraft structural repairs and assembly during MRO operations.

What is the BOLT,CLOSE TOLERANCE (P/N an176-21)?

The AN176-21 is a close tolerance hex head bolt with 3/8-24 UNF-3A thread specifications, manufactured from alloy steel per AN standards. This bolt secures shear-critical structural lug joints in aircraft frameworks where minimal clearance is required.

What conditions is the an176-21 available in?

The an176-21 is currently available in the following conditions: New Surplus. Each condition reflects the part's maintenance history and certification status per FAA standards.

How do I get pricing for the an176-21?

The an176-21 requires a custom quote. Submit a Request for Quote (RFQ) through our website or call our sales team at (904) 998-9101 for immediate pricing assistance.

Do you offer expedited shipping for the an176-21?

Yes, we offer same-day processing on in-stock items and provide 24/7 AOG (Aircraft on Ground) support for urgent needs. Standard, expedited, and overnight shipping options are available.