Double Hexagon Drilled Head Tension Bolt MS21250H04010

Technical Description

High-strength military standard 12-point double hexagon tension bolt engineered for critical, high-stress airframe structural applications. Constructed from high-tensile alloy steel with a minimum ultimate tensile strength rating of 180,000 psi. Designed with a precision 1/4-28 UNF-3A fine thread pitch, a minimal unthreaded grip shank length of 0.625 inches, and a total nominal fastener length of 1.137 inches. The specialized head incorporates four drilled safety wire holes with a 0.037-inch nominal diameter, designed to accept safety wire for complete vibrational security in intense flight environments

Component Specifications