螺丝攻牙钻孔径和滚造径对照表																		点击这返回总目录
公制粗螺纹				美制粗螺纹					公制细螺纹				美制细螺纹
规格	标准径	2级牙钻孔径		规格（UNC）	标准径	2级牙钻孔径			规格	标准径	2级牙钻孔径		规格（UNC）	标准径	2级牙钻孔径
		最大	最小			最大	最小				最大	最小			最大	最小
M1.0×0.25	0.75	0.785	0.729	NO.1-64(1.854)	1.55	1.582	1.425		M1.0×0.2	0.80	0.821	0.783	NO.0-80(1.524)	1.25	1.305	1.182
M1.1×0.25	0.85	0.885	0.829	NO.2-56(2.184)	1.80	1.871	1.695		M1.1×0.2	0.90	0.921	0.883	NO.1-72(1.854)	1.55	1.612	1.474
M1.2×0.25	0.95	0.985	0.985	NO.3-48(2.515)	2.10	2.146	1.941		M1.2×0.2	1.00	1.021	0.983	NO.2-64(2.184)	1.85	1.912	1.756
M1.4×0.3	1.10	1.142	1.075	NO.4-40(2.845)	2.30	2.385	2.157		M1.4×0.2	1.20	1.221	1.183	NO.3-56(2.515)	2.10	2.197	2.025
M1.6×0.35	1.25	1.321	1.221	NO.5-40(3.175)	2.60	2.697	2.487		M1.6×0.2	1.40	1.421	1.383	NO.4-48(2.845)	2.40	2.458	2.271
M1.7×0.35	1.35	1.421	1.321	NO.6-32(3.505)	2.80	2.895	2.642		M1.7×0.2	1.45	1.500	1.460	NO.5-44(3.175)	2.70	2.740	2.551
M1.8×0.35	1.45	1.521	1.421	NO8-32(4.166)	3.40	3.53	3.302		M1.8×0.2	1.60	1.621	1.583	NO.6-40(3.505)	2.90	3.022	2.820
M2.0×0.4	1.60	1.679	1.567	NO.10-24(4.826)	3.90	3.962	3.683		M2.0×0.25	1.75	1.785	1.729	NO.8-36(4.166)	3.50	3.606	3.404
M2.2×0.45	1.75	1.838	1.713	NO.12-24(5.486)	4.50	4.597	4.344		M2.2×0.25	1.95	1.985	1.929	NO.10-32(4.826)	4.10	4.165	3.963
M2.3×0.4	1.90	1.979	1.867	1/4-20	5.10	5.257	4.979		M2.3×0.25	2.05	2.061	2.001	NO.12-28(5.846)	4.60	4.724	4.496
M2.5×0.45	2.10	2.138	2.013	5/16-18	6.60	6.731	6.401		M2.5×0.35	2.20	2.221	2.121	1/4-28	5.50	5.588	5.360
M2.6×0.45	2.20	2.238	2.113	3/8-16	8.00	8.153	7.798		M2.6×0.35	2.20	2.246	2.186	5/16-24	6.90	7.035	6.782
M3.0×0.5	2.50	2.599	2.459	7/16-14	9.40	9.55	9.144		M3.0×0.35	2.70	2.721	2.621	3/8-24	8.50	8.636	8.382
M3.0×0.6	2.40	2.440	2.280	1/2-13	10.80	11.023	10.592		M3.5×0.35	3.20	3.221	3.121	7/16-20	9.90	10.033	9.729
M3.5×0.6	2.90	3.010	2.850	9/16-12	12.20	12.446	11.989		M4.0×0.5	3.50	3.599	3.459	1/2-20	11.50	11.607	11.329
M4.0×0.7	3.30	3.422	3.242	5/8-11	13.60	12.868	13.386		M4.5×0.5	4.00	4.099	3.959	9/16-18	12.90	13.081	12.751
M4.0×0.75	3.25	3.326	3.106	3/4-10	16.50	18.840	16.307		M5.0×0.5	4.50	4.599	4.459	5/8-18	14.50	14.681	14.351
M4.5×0.75	3.80	3.878	3.688	7/8-9	19.50	19.761	19.177		M5.5×0.5	5.00	5.099	4.959	3/4-16	17.50	17.678	17.323
M5.0×0.8	4.20	4.334	4.134	1	22.20	22.606	21.971		M6.0×0.75	5.30	5.378	5.188	7/8-14	20.50	20.675	20.270
M5.0×0.9	4.10	4.170	3.930	1-1/8-7	25.00	25.349	24.638		M6.0×0.5	5.50	5.550	5.400	1-12	23.20	23.571	23.114
M6.0×1.0	5.00	5.153	4.917	1-1/4-7	28.20	28.524	27.813		M7.0×0.75	6.30	6.378	6.188	1-1/8-12	26.50	26.746	26.289
M7.0×1.0	6.00	6.153	5.917	1-3/8-6	30.80	31.115	30.353		M7.0×0.5	6.50	6.550	6.400	1-1/4-12	29.50	29.921	29.464
M8.0×1.25	6.80	6.912	6.647	1-1/2-6	34.00	34.290	33.528		螺丝攻牙钻孔径和滚造径对照表
M9.0×1.25	7.80	7.912	7.647	1-3/4-5	39.50	39.827	38.964		公制细螺纹				美制细螺纹
M10×1.5	8.50	8.676	8.376	2-4-1/2	45.20	45.593	44.679		规格	标准径	2级牙钻孔径		规格（UNC）	标准径	2级牙钻孔径
M11×1.5	9.50	9.676	9.376								最大	最小			最大	最小
M12×1.75	10.30	10.441	10.106						M8.0×1.0	7.00	7.153	6.917	1-3/8-12	32.80	33.096	32.639
M14×2.0	12.00	12.210	11.835						M8.0×0.75	7.30	7.378	7.188	1-1/2-12	36.00	36.271	35.814
M16×2.0	14.00	14.210	13.835						M8.0×0.5	7.50	7.520	7.400
M18×2.5	15.50	15.744	15.294						M9.0×1.0	8.00	8.153	7.917
M20×2.5	17.50	17.744	17.294						M9.0×0.75	8.30	8.378	8.188
M22×2.5	19.50	19.744	19.294						M10×1.25	8.80	8.912	8.647
M24×3.0	21.00	21.252	20.752						M10×1.0	9.00	9.153	8.917
M27×3.0	24.00	24.252	23.752						M10×0.75	9.30	9.378	9.188
M30×3.5	26.50	26.771	26.211						M10×0.5	9.50	9.520	9.400
									M11×1.0	10.00	10.153	9.917
									M11×0.75	10.30	10.378	10.188
									M12×1.5	10.50	10.676	10.376
									M12×1.25	10.80	10.912	10.647
									M12×1.0	11.00	11.153	10.917
									M12×0.5	11.50	11.520	11.400
									M14×1.5	12.50	12.676	12.376
									M14×1.0	13.00	13.153	12.917
									M15×1.5	13.50	13.676	13.376
									M15×1.0	14.00	14.153	13.917
									M16×1.5	14.50	14.676	14.376
									M16×1.0	15.00	15.153	14.917
									M17×1.5	15.50	15.676	15.376
									螺丝攻牙钻孔径和滚造径对照表
									公制细螺纹				美制细螺纹
									规格	标准径	2级牙钻孔径		规格（UNC）	标准径	2级牙钻孔径
											最大	最小			最大	最小
									M17×1.0	16.00	16.153	15.917
									M18×2.0	16.00	16.210	15.835
									M18×1.5	16.50	16.676	16.376
									M18×1.0	17.00	17.153	16.917
									M20×2.0	18.00	18.210	17.835
									M20×1.5	18.50	18.676	18.376
									M20×1.0	19.00	19.153	18.917
									M22×2.0	20.00	20.210	19.835
									M22×1.5	20.50	20.676	20.376
									M22×1.0	21.00	21.153	20.917
									M24×2.0	22.00	22.210	21.835
									M24×1.5	22.50	22.676	22.376
									M24×1.0	23.00	23.153	22.917
									M25×2.0	23.00	23.210	22.835
									M25×1.5	23.50	23.676	23.376
									M25×1.0	24.00	24.153	23.917
									M26×1.5	24.50	24.676	24.376
									M27×2.0	25.00	25.210	24.835
									M27×1.5	25.50	25.676	25.376
									M27×1.0	26.00	26.153	25.917
									M28×2.0	26.00	26.210	25.835
									M28×1.5	26.50	26.676	26.376
									螺丝攻牙钻孔径和滚造径对照表
									公制细螺纹				美制细螺纹
									规格	标准径	2级牙钻孔径		规格（UNC）	标准径	2级牙钻孔径
											最大	最小			最大	最小
									M28×1.0	27.00	27.153	26.917
									M30×3.0	27.00	27.252	26.752
									M30×2.0	28.00	28.210	27.835
									M30×1.5	28.50	28.676	28.376
									M30×1.0	29.00	29.153	28.917
									M32×2.0	30.00	30.210	29.835
									M32×1.5	30.50	30.676	30.376
									M33×3.0	30.00	30.252	29.752
									M33×2.0	31.00	31.210	30.835
									M33×1.5	31.50	31.676	31.376
									M35×1.5	33.50	33.676	33.376
									M36×3.0	33.00	33.252	32.752
									M36×2.0	34.00	34.210	33.835
									M36×1.5	34.50	34.676	34.376