FASTENER (P/N aj4-25) - New Surplus

The aj4-25 is a Southco D4 series size 4 quarter-turn stud with slotted recess steel construction. This DZUS fastener provides quick-engage panel securing for aircraft access doors and maintenance covers. The stud pairs with a matching size 4 receptacle and spring to create vibration-resistant retention in high-vibration environments.

Installation requires verification of grip length and matching part numbers per the aircraft maintenance manual and Illustrated Parts Catalog. Commonly used in general aviation and MRO maintenance operations for rapid panel access.

What is the FASTENER (P/N aj4-25)?

The aj4-25 is a Southco D4 series size 4 quarter-turn stud with slotted recess steel construction. This DZUS fastener provides quick-engage panel securing for aircraft access doors and maintenance covers.

Does the aj4-25 meet AN/MS/NAS aviation specifications?

Aircraft hardware is manufactured to military and aviation specifications. The FASTENER conforms to its applicable AN (Air Force-Navy), MS (Military Standard), or NAS (National Aerospace Standard) specification. Contact us for specific specification details.

What material is the aj4-25 manufactured from?

Aviation hardware is available in various materials including cadmium-plated steel, stainless steel, aluminum alloy, and titanium depending on the application. Contact us for material certification and specifications for the aj4-25.

Can I order the aj4-25 in custom quantities?

Yes, we sell hardware in various quantities from single units to bulk lots. The FASTENER is available in: New Surplus. Submit an RFQ for volume pricing or call (904) 998-9101 for quantity availability.