SCREW-100 FLAT HEAD CLOSE TOL. (P/N nas517-3-5) - New Surplus

The NAS517-3-5 is a 100° flat countersunk machine screw engineered for aerospace assemblies requiring flush-surface installation. Manufactured from alloy steel with a cross-recess drive, this close-tolerance fastener meets NAS517 specifications for precision and reliability. Used in airframe skin joints where countersinking is critical to maintain aerodynamic contour and structural integrity.

Installation requires matching the 100° countersink angle with appropriate grip length and thread selection per design data, then torquing to specification per the applicable aircraft maintenance manual.

What is the SCREW-100 FLAT HEAD CLOSE TOL. (P/N nas517-3-5)?

The NAS517-3-5 is a 100° flat countersunk machine screw engineered for aerospace assemblies requiring flush-surface installation. Manufactured from alloy steel with a cross-recess drive, this close-tolerance fastener meets NAS517 specifications for precision and reliability.

Does the nas517-3-5 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 nas517-3-5 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 nas517-3-5.

Can I order the nas517-3-5 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.