Socket Head Bolts

Allen Head Bolts are bolt fasteners with hexagon hole or hex socket punched into the head of the bolt along with externally threaded body. Allen keys or hexagon keys are used for torqing allen head bolts. These bolts are often manufactured with round cylindrical head, flat head, button head styles. Allen key bolts, hex socket bolts are aliases of allen head bolts. Allen head bolts are manufactured in high tensile, stainless steel, duplex steel and astm specifications. Allen head bolt dimensions are defined in both metric and imperials sizes with unified national coarse pitch (UNC), fine pitch (UNF), fixed pitch (UN) and iso metric thread profile.
Browse the page for information on allen head bolt manufacturing process, forming method, available sizes, sub-types, thread types, metric and imperial dimension standards, weight charts, torque values, material categories, grades and astm specifications.