BOLT, REDUCED CSK HD (P/N nas8603-6) - New Surplus

The NAS8603-6 is a reduced countersunk head bolt with a 100° flat profile and cross-recess drive. This close-tolerance fastener conforms to NAS8603 specifications and features UNJF threads for precise fit in aircraft structural applications. Designed for flush skin-to-structure joints where aerodynamic surfaces require seamless interfaces.

Install into prepared countersinks and torque according to aircraft maintenance manual specifications. Verify grip length against the Illustrated Parts Catalog before installation to ensure proper clamping force and structural integrity.

What is the BOLT, REDUCED CSK HD (P/N nas8603-6)?

The NAS8603-6 is a reduced countersunk head bolt with a 100° flat profile and cross-recess drive. This close-tolerance fastener conforms to NAS8603 specifications and features UNJF threads for precise fit in aircraft structural applications.

Does the nas8603-6 meet AN/MS/NAS aviation specifications?

Aircraft hardware is manufactured to military and aviation specifications. The BOLT, REDUCED CSK HD 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 nas8603-6 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 nas8603-6.

Can I order the nas8603-6 in custom quantities?

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