NUT,SLFLKG,EXTD WASHER DOUBLE HEXA (P/N FN22-428) - New Surplus

The FN22-428 is a self-locking double-hex nut with an extended washer conforming to SAE AS20625 specifications. This all-metal prevailing-torque fastener combines a 12-point nut head with an enlarged washer base to distribute load across a wider bearing surface. The integral locking mechanism prevents loosening from vibration without requiring nylon inserts.

Used in airframe structural attachments on Hawker 800/800XP/850XP/900XP business jets. Install and torque per aircraft maintenance manual requirements, verifying part number against the Illustrated Parts Catalog.

What is the NUT,SLFLKG,EXTD WASHER DOUBLE HEXA (P/N FN22-428)?

The FN22-428 is a self-locking double-hex nut with an extended washer conforming to SAE AS20625 specifications. This all-metal prevailing-torque fastener combines a 12-point nut head with an enlarged washer base to distribute load across a wider bearing surface.

What conditions is the FN22-428 available in?

The FN22-428 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 FN22-428?

The FN22-428 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 FN22-428?

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.