NUT (P/N 646605) - New Surplus

The 646605 is a 1/4-28 UNF-2B hex nut for Continental piston engines. This steel fastener secures engine hardware on Continental IO-240 and IO-360 assemblies. The nut features standard hex geometry with unified fine thread pitch for reliable clamping force in engine applications.

Installation requires torque specification per the Continental engine maintenance manual. Verify part compatibility with your aircraft's Illustrated Parts Catalog before installation.

What is the NUT (P/N 646605)?

The 646605 is a 1/4-28 UNF-2B hex nut for Continental piston engines. This steel fastener secures engine hardware on Continental IO-240 and IO-360 assemblies.

What conditions is the 646605 available in?

The 646605 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 646605?

The 646605 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 646605?

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.