WASHER SPRING 1/4 UN (P/N sp47-e) - New Surplus

The sp47-e is a steel spring lock washer designed for 1/4-inch Unified fasteners. This washer maintains bolt preload and resists vibration-induced loosening in aircraft structural and mechanical assemblies. It conforms to MS35338 specifications (formerly AN935 standard).

Install the washer directly beneath the bolt head or nut to create spring tension that compensates for joint relaxation during flight operations. Verify washer size against the aircraft Illustrated Parts Catalog before installation and follow applicable maintenance manual procedures for torque and assembly sequence.

What is the WASHER SPRING 1/4 UN (P/N sp47-e)?

The sp47-e is a steel spring lock washer designed for 1/4-inch Unified fasteners. This washer maintains bolt preload and resists vibration-induced loosening in aircraft structural and mechanical assemblies.

What conditions is the sp47-e available in?

The sp47-e 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 sp47-e?

The sp47-e 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 sp47-e?

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.