BOLT, 100 DEGREE COUNTERSUNK (P/N a174-4d) - New Surplus

The a174-4d is a 100-degree countersunk bolt designed for flush, load-bearing fastening in aircraft structures. This fastening solution provides a smooth aerodynamic surface when installed in skin and panel attachments. The 100-degree head angle matches NAS flush-bolt geometry standards commonly used in general aviation and commercial aircraft.

Installation requires countersinking to the correct depth and torque specifications per the aircraft maintenance manual. Verify applicability through the Illustrated Parts Catalog before use.

What is the BOLT, 100 DEGREE COUNTERSUNK (P/N a174-4d)?

The a174-4d is a 100-degree countersunk bolt designed for flush, load-bearing fastening in aircraft structures. This fastening solution provides a smooth aerodynamic surface when installed in skin and panel attachments.

Does the a174-4d meet AN/MS/NAS aviation specifications?

Aircraft hardware is manufactured to military and aviation specifications. The BOLT, 100 DEGREE COUNTERSUNK 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 a174-4d 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 a174-4d.

Can I order the a174-4d in custom quantities?

Yes, we sell hardware in various quantities from single units to bulk lots. The BOLT, 100 DEGREE COUNTERSUNK is available in: New Surplus. Submit an RFQ for volume pricing or call (904) 998-9101 for quantity availability.