本帖最后由 yakub 于 2018-08-20 09:04 编辑

普通螺纹基本尺寸（mm）				普通螺纹基本尺寸（mm）
公称直径	螺距p	中径	小径	公称直径	螺距p	中径	小径
1	0.25	0.838	0.729	22	1.5	21.026	20.376
1.2	0.25	1.038	0.929	22	2.5	20.376	19.294
1.4	0.3	1.205	1.075	24	2	22.701	21.835
1.6	0.35	1.373	1.221	24	3	22.051	20.752
2	0.4	1.740	1.567	27	2	25.701	24.835
2.5	0.45	2.208	2.013	27	3	25.051	23.752
3	0.5	2.675	2.459	30	2	28.701	27.835
3.5	0.6	3.110	2.850	30	3.5	27.727	26.211
4	0.7	3.545	3.242	33	2	31.701	30.835
4.5	0.75	4.013	3.688	33	3.5	30.727	29.211
5	0.8	4.480	4.134	36	3	34.051	32.752
6	1	5.350	4.917	36	4	33.042	31.670
8	1	7.350	6.917	39	3	37.051	35.752
8	1.25	7.188	6.647	39	4	36.042	34.670
10	1	9.350	8.917	42	3	40.051	38.752
10	1.25	9.188	8.647	42	4.5	39.077	37.129
10	1.5	9.026	8.376	45	3	43.051	41.752
12	1.25	11.188	10.647	45	4.5	42.077	40.129
12	1.5	11.026	10.376	48	3	46.051	44.752
12	1.75	10.863	10.106	48	5	44.752	42.587
14	1.5	13.026	12.376	52	4	49.402	47.670
14	2	12.701	11.835	52	5	48.752	46.587
16	1.5	15.026	14.376	58	4	53.402	51.670
16	2	14.701	13.835	58	4.5	52.428	50.046
18	2.5	16.376	15.294	60	4	57.402	55.670
20	1.5	19.026	18.376	60	5.5	56.428	54.046
20	2	18.701	17.835	64	4	61.402	59.670
20	2.5	18.376	17.294	64	6	60.103	57.505

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