BOLT,MACHINE (P/N an4h4a) - New Surplus

The AN4H4A is an AN4 series hex-head machine bolt with a drilled head and undrilled shank, manufactured from alloy steel per AN standard specifications. The -4 designation indicates 1/2-inch nominal under-head length, designed for structural joints requiring safety-wire retention. The drilled head accommodates safety wire to lock the bolt with a self-locking nut on the undrilled shank, preventing fastener loosening under vibration.

Installation requires torquing per aircraft maintenance manual specifications and verifying grip length against the Illustrated Parts Catalog. Common in airframe structural assemblies and control surface attachments.

What is the BOLT,MACHINE (P/N an4h4a)?

The AN4H4A is an AN4 series hex-head machine bolt with a drilled head and undrilled shank, manufactured from alloy steel per AN standard specifications. The -4 designation indicates 1/2-inch nominal under-head length, designed for structural joints requiring safety-wire retention.

What conditions is the an4h4a available in?

The an4h4a 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 an4h4a?

The an4h4a 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 an4h4a?

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.