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UNEF美标航空航天螺纹攻丝底孔直径及公差

发布时间:2022-08-02 金属切削，机械制造

UNEF 美标航空航天螺纹攻丝底孔直径及公差

螺纹直径 Ø“ -	螺距 Gg/1“ TPI	螺纹直径 Ø mm	底孔直径 Ø mm	底孔直径 Ø mm min	底孔直径-Ø mm max
Nr. 12	32	5,486	4,75	4,627	4,816
1/4	32	6,350	5,60	5,491	5,679
5/16	32	7,938	7,20	7,078	7,267
3/8	32	9,525	8,80	8,666	8,854
7/16	28	11,113	10,25	10,130	10,344
1/2	28	12,700	11,80	11,718	11,932
9/16	24	14,288	13,30	13,142	13,389
5/8	24	15,875	14,75	14,729	14,976
11/16	24	17,463	16,50	16,317	16,564
3/4	20	19,050	17,75	17,675	17,967
13/16	20	20,638	19,50	19,263	19,555
7/8	20	22,225	21,00	20,850	21,142
15/16	20	23,813	22,50	22,438	22,730
1	20	25,400	24,25	24,025	24,317
1.1/16	18	26,988	25,75	25,460	25,781
1.1/8	18	28,575	27,25	27,047	27,369
1.3/16	18	30,163	28,75	28,635	28,956
1.1/4	18	31,750	30,50	30,222	30,544
1.5/16	18	33,338	32,00	31,810	32,131
1.3/8	18	34,925	33,50	33,397	33,719
1.7/16	18	36,513	35,20	34,985	35,306
1.1/2	18	38,100	36,80	36,572	36,894
1.9/16	18	39,688	38,40	38,160	38,481
1.5/8	18	41,275	40,00	39,747	40,069
1.11/16	18	42,863	41,50	41,335	41,656

UN 8 美标螺纹

螺纹直径	螺距 Gg/0“ TPI	螺纹直径 Ø mm	底孔直径 Ø mm	底孔直径 Ø mm min	底孔直径-Ø mm max
1.1/8	8	28.575	25.500	25.138	25,773
1.1/4	8	31.750	28.750	28.313	28,948
1.3/8	8	34.925	31.750	31.488	32,123
1.1/2	8	38.100	35.000	34.663	35.298
1.5/8	8	41.275	38.000	37.838	38.473
1.3/4	8	44.450	41.500	41.013	41.648
1.7/8	8	47.625	44.500	44.188	44.823
2	8	50.800	47.750	47.363	47.998