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米字槽球面圓柱頭螺釘Table15 BS 1981 - 1991

選擇規格尺寸點擊↓

(3#)

10#

(12#)

1/4

5/16

3/8

7/16

1/2

括號內尺寸為非優選

尺寸單位: inch

英標BS 1981 - 1991 BS1981 1981BS 米字槽球面圓柱頭螺釘Table15

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公差美制螺紋極限尺寸米/英制螺紋對照螺紋直徑與受力截面積最小破壞扭矩牌號等級

螺紋尺寸
d

(3#)

10#

(12#)

1/4

5/16

3/8

7/16

1/2

d_k	最大值
	最小值
k	最大值
	最小值
槽號
M
深度	最大值
	最小值

0.14	0.161	0.183	0.205	0.226	0.27	0.313	0.357	0.414	0.518	0.622	0.625	0.75
0.124	0.145	0.166	0.187	0.208	0.250	0.292	0.334	0.389	0.490	0.590	0.589	0.710
0.083	0.095	0.107	0.120	0.132	0.156	0.180	0.205	0.237	0.295	0.355	0.368	0.412
0.066	0.077	0.088	0.100	0.111	0.133	0.156	0.178	0.207	0.262	0.315	0.321	0.362
1	1	1	2	2	2	2	3	3	3	4	4	4
0.096	0.104	0.114	0.132	0.154	0.169	0.185	0.246	0.265	0.314	0.369	0.391	0.412
0.053	0.062	0.072	0.054	0.076	0.092	0.108	0.117	0.137	0.183	0.201	0.224	0.246
0.043	0.052	0.052	0.036	0.058	0.074	0.090	0.099	0.119	0.165	0.183	0.206	0.228

①,a值小于2倍螺距
②,ds≈螺紋中徑或大徑

引用參考

GB /T 1172 - 1999

黑色金屬硬度及強度換算值

GB /T 5267.1 - 2002

鍍鋅、鍍鎳、鍍鎘、復合鍍等層鍍層鹽霧腐蝕的防護性能

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 - 公稱長度和螺紋長度 (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

注：技術數據僅供參考，請以官方原件為準！

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米字槽球面圓柱頭螺釘Table15 BS 1981 - 1991

引用參考