准备攻丝的螺纹 钻头规格代码 (最接近的英制分数规格) 英制小数规格 3/8"-24UNF 字母Q 21/64" 0.332 M10×1.50 8.7mm - 0.3425 M10×1.25 8.9mm 11/32" 0.3503 M10×1.00* 9.1mm - 0.3583 7/16"-14UNC 字母U 23/64" 0.368 M11×1.50 9.7mm - 0.3818 7/16"-20UNF 25/64" 25/64" 0.3906 M12×1.75 10.5mm - 0.4133 M12×1.50 10.7mm 27/64" 0.4212 1/2"-13UNC 27/64" 27/64" 0.4219 M12×1.25* 10.9mm 27/64" 0.4291 1/2"-20UNF 29/64" 29/64" 0.4531 1/2"-24UNS 29/64" 29/64" 0.4531 M14×2.00 12.2mm - 0.4803 9/16"-12UNC 31/64" 31/64" 0.4844 M14×1.50 12.7mm - 0.4999 M14×1.25* 12.8mm - 0.5039 9/16"-18UNF 33/64" 33/64" 0.5156 5/8"-11UNC 17/32" 17/32" 0.5312 M16×2.00 14.2mm 35/64" 0.559 5/8"-18UNF 37/64" 37/64" 0.5781 M16×1.50 14.7mm - 0.5787 11/16"-11UNS 19/32" 19/32" 0.5938 M18×2.50 15.8mm 39/64" 0.522 11/16"-16UNS 5/8" 5/8" 0.625 3/4"-10UNC 21/32" 21/32" 0.6562 M18×1.50* 16.8mm - 0.6614 3/4"-16UNF 11/16" 11/16" 0.6875 M20×2.50 17.8mm 11/16" 0.7008 7/8"-9UNC 49/64" 49/64" 0.7656 7/8"-14UNF 13/16" 13/16" 0.8125 M22×1.50 20.9mm - 0.8228 7/8"-18UNS* 53/64" 53/64" 0.8281 M24×3.00 21.4mm 53/64" 0.8425 1"-8UNC 7/8" 7/8" 0.875 M24×2.00 22.3mm - 0.8779 1"-12UNF 59/64" 59/64" 0.9219 1"-14UNS 15/16" 15/16" 0.9375 11/8"-7 UNC 63/64" 63/64" 0.9844 11/8"-12 UNF 13/64" 13/64" 1.0469 11/4"-7 UNC 17/64" 17/64" 1.1094 11/4"-12 UNF 111/64" 111/64" 1.1719 13/8"-6 UNC 17/32" 17/32" 1.2188 13/8"-12 UNF 119/64" 119/64" 1.2969 11/2"-6 UNC 111/32" 111/32" 1.3438 11/2"-12 UNF 127/64" 127/64" 1.4219 |
准备攻丝的螺纹 钻头规格代码 (最接近的英制分数规格) 英制小数规格 1/8"-27NPT 字母R - 0.339 1/4"-18NPT 7/16" 7/16" 0.4375 3/8"-18NPT 37/64" 37/64" 0.5781 1/2"-14NPT 45/64" 45/64" 0.7031 3/4"-14NPT 59/64" 59/64" 0.9219 1"-11½ NPT 15/32" 15/32" 1.1562 1¼"-11 ½ NPT 1½" 1½" 1.5 1½"-11 ½ NPT 147/64" 147/64" 1.7344 2"-11½ NPT 27/32" 27/32" 2.2188 |
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