... .3-24 (W7, 6), 9.5-24 (W8, 8), 11.2-24 (W10, 8), 12.4-24 (W11, 8), 12-38 ... -28 (W11, 6/8), 13.6-28 (W12, 8/10);2.Section width (±4%): 205, 210, 210, 240, 285, 315, 330, 315 ... , 345 ;3.Outer diameter (R-1, ±1.2%): 810, 895, 995, 1050, 1105, 1160, 1575, 1260, 1310;4 ... , 8.3-20, 8.3-24, 9.5-24, 11.2-24, 12.4-24, 12-38, 12.4-28, 13 ...