MIL-DTL-1222J

Abstract

This specification covers standard studs, hex cap screws, and heavy hex bolts in nominal standard diameters of &#188; inch to 4 inches, nuts in nominal standard diameters of &#188; inch to 3 inches, and socket head cap screws in nominal standard diameters of &#188; inch to 1&#189; inches for submarine safety and other applications where a high degree of reliability is required (see <a>6.1</a>). <b><u>Intended Use:</u></b> Fasteners meeting this specification are intended for general, high temperature, high strength and corrosive environment applications where a high degree of reliability is required. It is designed to be used to acquire commercial off-the-shelf fasteners with added inspections to verify the high degree of reliability required. Fastener types and grades have been selected to meet diverse applications which include: elevated temperatures, immersion in sea water, salt air/marine environments, high preloads and high shock loadings. Condition "I" was developed for martensitic corrosion resisting steel fasteners requiring moderate strength and greater resistance to stress corrosion cracking in moist, halogenated, sulfur containing or wet environments. <br>