Bolt, 100° Flat Countersunk Head NAS1203-13D

Technical Description

High-strength precision alloy steel close-tolerance structural bolt manufactured to NAS1203 design guidelines. Thread metrics follow a right-hand #10-32 UNJF-3A tight-tolerance fit class featuring a smooth unthreaded grip shank engineered to absorb high structural shear loads. Fabricated from premium high-tensile alloy steel delivering a minimum ultimate tensile strength rating of 160,000 PSI to maintain critical assembly clamping preloads. Outfitted with an aerodynamically flush 100-degree flat countersunk head utilizing a standard cruciform cross-recess drive system. Features a precision cross-drilled hole (D suffix) through the threaded extension to facilitate positive safety wire locking or cotter pin retention across flight-critical structural linkages. Finished with an all-over cadmium plating surface layer to ensure comprehensive galvanic protection and long-term corrosion resistance.

Component Specifications