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開槽沉頭螺釘Table4 BS 1981 - 1991

選擇規(guī)格尺寸點(diǎn)擊↓

(1#)

(3#)

10#

(12#)

1/4

5/16

3/8

7/16

1/2

5/8

3/4

括號(hào)內(nèi)尺寸為非優(yōu)選

尺寸單位: inch

英標(biāo)BS 1981 - 1991 BS1981 1981BS 開槽沉頭螺釘Table4

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單重計(jì)算公差美制螺紋極限尺寸米/英制螺紋對(duì)照螺紋直徑與受力截面積最小破壞扭矩牌號(hào)等級(jí)

螺紋尺寸
d

(1#)

(3#)

10#

d_k	最大值
	最小值
k
n	最大值
	最小值
t	最大值
	最小值

0.119	0.146	0.172	0.199	0.225	0.252	0.279	0.332	0.385
0.099	0.123	0.147	0.171	0.195	0.22	0.244	0.292	0.34
0.035	0.043	0.051	0.059	0.067	0.075	0.083	0.1	0.116
0.023	0.026	0.031	0.035	0.039	0.043	0.048	0.054	0.060
0.016	0.019	0.023	0.027	0.031	0.035	0.039	0.045	0.050
0.015	0.019	0.023	0.027	0.03	0.034	0.038	0.045	0.053
0.01	0.012	0.015	0.017	0.02	0.022	0.024	0.029	0.034

螺紋尺寸
d

(12#)

1/4

5/16

3/8

7/16

1/2

5/8

3/4

d_k	最大值
	最小值
k
n	最大值
	最小值
t	最大值
	最小值

0.438	0.507	0.635	0.762	0.812	0.875	1.125	1.375
0.389	0.452	0.568	0.685	0.723	0.775	1.002	1.23
0.132	0.153	0.191	0.23	0.223	0.223	0.298	0.372
0.067	0.075	0.084	0.094	0.094	0.106	0.133	0.149
0.056	0.064	0.072	0.081	0.081	0.091	0.116	0.131
0.06	0.07	0.088	0.106	0.103	0.103	0.137	0.171
0.039	0.046	0.058	0.07	0.066	0.065	0.088	0.111

①,a＜2倍螺距

同版本產(chǎn)品組

引用參考

GB /T 1172 - 1999

黑色金屬硬度及強(qiáng)度換算值

GB /T 5267.1 - 2002

鍍鋅、鍍鎳、鍍鎘、復(fù)合鍍等層鍍層鹽霧腐蝕的防護(hù)性能

GB /T 193 - 2003

普通螺紋（一般用途米制螺紋）- 直徑與螺距系列 (ISO 261: 1998, MOD)

GB /T 3106 - 2016

緊固件 - 螺栓、螺釘和螺柱 - 公稱長(zhǎng)度和螺紋長(zhǎng)度 (ISO 888:2012, MOD)

GB /T 3 - 1997

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

GB /T 5779.1 - 2000

緊固件表面缺陷 - 螺栓、螺釘和螺柱 - 一般要求

GB /T 5779.3 - 2000

緊固件表面缺陷 - 螺栓、螺釘和螺柱 - 特殊要求

GB /T 3103.1 - 2002

緊固件公差（螺栓、螺柱、螺釘和螺母）

GB /T 34632 - 2017

統(tǒng)一螺紋搓制和滾制前的毛坯直徑

注：技術(shù)數(shù)據(jù)僅供參考，請(qǐng)以官方原件為準(zhǔn)！

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