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开槽半沉头螺钉Table8 BS 1981 - 1991

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(1#)

(3#)

10#

(12#)

1/4

5/16

3/8

括号内尺寸为非优选

尺寸单位: 英寸(inch)

英标BS 1981 - 1991 BS1981 1981BS 开槽半沉头螺钉Table8

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单重计算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

螺纹规格
d

(1#)

(3#)

10#

(12#)

1/4

5/16

3/8

b	最小值
d_k	最大值
	最小值
k
n	最大值
	最小值
t	最大值
	最小值

1.75	1.75	1.75	1.75	1.75	1.75	1.75	1.75	1.75	1.75	1.75	1.75	1.75
0.119	0.146	0.172	0.199	0.225	0.252	0.279	0.332	0.385	0.438	0.507	0.635	0.762
0.099	0.123	0.147	0.171	0.195	0.22	0.244	0.292	0.34	0.389	0.452	0.568	0.685
0.035	0.043	0.051	0.059	0.067	0.075	0.083	0.1	0.116	0.132	0.153	0.191	0.23
0.023	0.026	0.031	0.035	0.039	0.043	0.048	0.054	0.06	0.067	0.075	0.084	0.094
0.016	0.019	0.023	0.027	0.031	0.035	0.039	0.045	0.05	0.056	0.064	0.072	0.081
0.03	0.038	0.045	0.052	0.059	0.067	0.074	0.088	0.103	0.117	0.136	0.171	0.206
0.025	0.031	0.037	0.043	0.049	0.055	0.06	0.072	0.084	0.096	0.112	0.141	0.17

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！

类似标准及供货信息

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4	[国标] GB 949 - 1988	开槽半沉头不脱出螺钉 Slotted Raised Countersunk Head Screws with Waisted Shank
5	[美标] IFI 513 - 1982	米制开槽半沉头机械螺钉 Table 4 Metric Slotted Oval Countersunk Head Machine Screws
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25	[英标] BS 1981 - 1991	开槽半沉头螺钉(短的)Table10 Slottted Oval Countersunk Head Screws： Short Length
26	[英标] BS 4183 (T3) - 1967	开槽半沉头机械螺钉 Slotted raised countersunk head machine screws. Metric series
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29	[台湾] CNS 9679 - 1982	精密机械用开槽半沉头螺钉 Slotted Raised Countersunk Head Screws For Fine Mechanics
30	[台湾] CNS 4414 - 1981	开槽半沉头螺钉 Slotted Raised Countersunk Head Screws - Product Grade A
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