Carbon steel 1010 thru 1022 or 1108 thru 1118 In accordance with QQ-S-631, QQ-S-634,QQ-S-637 or bQ-W-405.Brass, alloy no. 260 or 268, quarter-hard In accordance with QQ-E613 or QQ-B-626;oralloy no. 260 or 27@, quarter-hard In accordance with QQ-Y-321.