NUT (P/N an310-5) - New Surplus

The AN310-5 is a steel castle nut with a 5/16-24 UNF thread for aircraft fastener applications. This nut features castellations (notches) that align with a drilled bolt shank to accept a cotter pin, providing positive mechanical retention. Commonly used to secure control-system linkage bolts and other critical connections where fastener lockout is required.

Installation involves torquing to specification per FAA AC 43.13-1B, then aligning the castellations with the bolt's cotter-pin hole and inserting the pin to prevent rotation. Standard in general aviation and MRO maintenance.

What is the NUT (P/N an310-5)?

The AN310-5 is a steel castle nut with a 5/16-24 UNF thread for aircraft fastener applications. This nut features castellations (notches) that align with a drilled bolt shank to accept a cotter pin, providing positive mechanical retention.

What conditions is the an310-5 available in?

The an310-5 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 an310-5?

The an310-5 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 an310-5?

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.