Bolt, Internal Wrenching (7/16-20 x 2-11/16) NAS147-43

Technical Description

Precision aerospace-grade, high-strength internal wrenching structural bolt (PN: NAS147-43) manufactured from premium carbon alloy steel. Features a fine 7/16-20 UNF-3A thread profile engineered with a 0.4375-inch nominal shank diameter to handle critical high-tensile and fatigue load applications. Designed with an unthreaded grip length of 1.875 inches (1-7/8") and an overall fastener length of 2.688 inches (2-11/16"). Configured with a compact cylindrical internal socket head designed for flush or tight-clearance countersunk counterbore installations utilizing a standard hex allen wrench. Finished with a yellow cadmium/chromate plating providing exceptional protection against corrosion, oxidation, and surface friction in heavy-duty structural aircraft frames.

Component Specifications