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内键槽圆柱头螺钉 ASME/ANSI B 18.3 - 2003

选择规格尺寸点击↓

10#

1/4

5/16

3/8

7/16

1/2

5/8

3/4

7/8

尺寸单位: inch

美标ASME/ANSI B18.3 - 2003 ASME/ANSI18.3 1 内键槽圆柱头螺钉

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公差美制螺纹极限尺寸米/英制螺纹对照螺纹直径与受力截面积最小破坏扭矩牌号等级

公称长度L 注:选择后获得 螺纹长度

螺纹规格
d

10#

d	螺纹直径
PP	粗牙/UNC
	细牙/UNF
	超细牙/UNEF
d_s	最大值=公称
d_s	最小值
d_k	最大值
d_k	最小值
k	最大值
k	最小值
A	公称尺寸
t	最小值
b	最小值

0.060	0.073	0.086	0.099	0.112	0.125	0.138	0.164	0.190
-	64.0	56.0	48.0	40.0	40.0	32.0	32.0	24.0
80.0	72.0	64.0	56.0	48.0	44.0	40.0	36.0	32.0
-	-	-	-	-	-	-	-	-
0.060	0.073	0.086	0.099	0.112	0.125	0.138	0.164	0.190
0.0568	0.0695	0.0822	0.0949	0.1075	0.1202	0.1329	0.1585	0.1840
0.096	0.118	0.140	0.161	0.183	0.205	0.226	0.270	0.312
0.091	0.112	0.134	0.154	0.176	0.198	0.218	0.262	0.303
0.060	0.073	0.086	0.099	0.112	0.125	0.138	0.164	0.190
0.057	0.070	0.083	0.095	0.108	0.121	0.134	0.159	0.185
0.060	0.072	0.096	0.096	0.111	0.111	0.133	0.168	0.183
0.025	0.031	0.038	0.044	0.051	0.057	0.064	0.077	0.090
0.50	0.62	0.62	0.62	0.75	0.75	0.75	0.88	0.88

螺纹长度b

螺纹规格
d

1/4

5/16

3/8

7/16

1/2

5/8

3/4

7/8

d	螺纹直径
PP	粗牙/UNC
	细牙/UNF
	超细牙/UNEF
d_s	最大值=公称
d_s	最小值
d_k	最大值
d_k	最小值
k	最大值
k	最小值
A	公称尺寸
t	最小值
b	最小值

0.250	0.313	0.375	0.438	0.500	0.625	0.750	0.875	1.000
20.0	18.0	16.0	14.0	13.0	11.0	10.0	9.0	8.0
28.0	24.0	24.0	20.0	20.0	18.0	16.0	14.0	12.0
32.0	32.0	32.0	28.0	28.0	24.0	20.0	20.0	20.0
0.250	0.313	0.375	0.438	0.500	0.625	0.750	0.875	1.000
0.2435	0.3053	0.3678	0.4294	0.4919	0.6163	0.7406	0.8647	0.9886
0.375	0.469	0.562	0.656	0.750	0.938	1.125	1.312	1.500
0.365	0.457	0.550	0.642	0.735	0.921	1.107	1.293	1.479
0.250	0.312	0.375	0.438	0.500	0.625	0.750	0.875	1.000
0.244	0.306	0.368	0.430	0.492	0.616	0.740	0.864	0.988
0.216	0.291	0.372	0.454	0.454	0.595	0.620	0.698	0.790
0.120	0.151	0.182	0.213	0.245	0.307	0.370	0.432	0.495
1.00	1.12	1.25	1.38	1.50	1.75	2.00	2.25	2.50

螺纹长度b

工艺相关

ASME B 18.3 (Table 4) - 2012

内凹槽螺钉无螺纹杆长和夹紧长度

引用参考

GB /T 1172 - 1999

黑色金属硬度及强度换算值

GB /T 5267.1 - 2002

镀锌、镀镍、镀镉、复合镀等层镀层盐雾腐蚀的防护性能

GB /T 193 - 2003

普通螺纹（一般用途米制螺纹）- 直径与螺距系列 (ISO 261: 1998, MOD)

GB /T 3106 - 2016

紧固件 - 螺栓、螺钉和螺柱 - 公称长度和螺纹长度 (ISO 888:2012, MOD)

GB /T 3 - 1997

普通螺纹收尾、肩距、退刀槽和倒角 (ISO 3508:1976 / ISO 4755:1983)

GB /T 5779.1 - 2000

紧固件表面缺陷 - 螺栓、螺钉和螺柱 - 一般要求

GB /T 5779.3 - 2000

紧固件表面缺陷 - 螺栓、螺钉和螺柱 - 特殊要求

注：技术数据仅供参考，请以官方原件为准！

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