SCREW-100 FLAT HEAD CLOSE TOL. (P/N nas517-3-9) - New Surplus

The NAS517-3-9 is a 100° flat head, close-tolerance machine screw manufactured from alloy steel with cross-recess drive. Designed for flush, shear-critical joints in aircraft structural applications, this screw installs in a prepared 100° countersink to create a seamless skin surface. Commonly used to fasten aircraft skin panels to substructures where precise fit and load distribution are critical.

Installation requires correct grip length selection and torque application per aircraft maintenance manual and NAS/MIL standards. Close tolerance ensures minimal gap and maximum structural integrity.

What is the SCREW-100 FLAT HEAD CLOSE TOL. (P/N nas517-3-9)?

The NAS517-3-9 is a 100° flat head, close-tolerance machine screw manufactured from alloy steel with cross-recess drive. Designed for flush, shear-critical joints in aircraft structural applications, this screw installs in a prepared 100° countersink to create a seamless skin surface.

Does the nas517-3-9 meet AN/MS/NAS aviation specifications?

Aircraft hardware is manufactured to military and aviation specifications. The SCREW-100 FLAT HEAD CLOSE TOL. 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 nas517-3-9 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 nas517-3-9.

Can I order the nas517-3-9 in custom quantities?

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