BOLT, 100DEG CSK 1032UNF (P/N a173-20d) - New Surplus

The a173-20d is a 100-degree countersunk bolt in 10-32 UNF thread specification for flush fastening in aircraft structures. This steel fastener installs into prepared countersink or dimple holes, providing a low-profile head that sits flush with the skin surface. Used at skin-to-structure joints where aerodynamic smoothness and minimal snag points are critical.

Installation requires following the aircraft maintenance manual and verifying compatibility with the Illustrated Parts Catalog for your specific airframe.

What is the BOLT, 100DEG CSK 1032UNF (P/N a173-20d)?

The a173-20d is a 100-degree countersunk bolt in 10-32 UNF thread specification for flush fastening in aircraft structures. This steel fastener installs into prepared countersink or dimple holes, providing a low-profile head that sits flush with the skin surface.

What conditions is the a173-20d available in?

The a173-20d 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 a173-20d?

The a173-20d 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 a173-20d?

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.