2cres, ams5504, bracket material, rockwell c30-38 bracket materialhardness, 2.366 in. Long leg lg, 0.896-0.916 in. Short leg lg, 0.598-0.602 in. Center leg lg, 0.071-0.078 in. Bracket material thk, 1 p/n 518109 nut on short leg, 3 mtg holes on long leg