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英制開槽半沉頭螺釘 - B.S.W. & B.S.F. 螺紋 [Table 3] BS 450 - 1958

選擇規格尺寸點擊↓

1/8

3/16

7/32

1/4

5/16

3/8

BS 450 - 1958 英制開槽半沉頭螺釘 - B.S.W. & B.S.F. 螺紋 [Table 3]

尺寸單位: inch

英标BS 450 - 1958 BS450 450BS 英制開槽半沉頭螺釘 - B.S.W. & B.S.F. 螺紋 [Table 3]

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單重計算公差最小破壞扭矩牌号等級

螺紋尺寸
d

1/8

3/16

7/32

1/4

5/16

3/8

d
PP	牙數/英寸	B.S.W.
		B.S.F.
d_k	理論值
	最大值
	最小值
k	最大值
f	公稱
n	最大值
	最小值
t	公稱

0.1250	0.1875	0.2188	0.2500	0.3125	0.3750
40	24	/	20	18	16
/	32	28	26	22	20
0.237	0.356	0.415	0.475	0.594	0.712
0.219	0.328	0.383	0.438	0.547	0.656
0.201	0.307	0.36	0.412	0.518	0.624
0.056	0.084	0.098	0.113	0.141	0.169
0.026	0.040	0.044	0.051	0.068	0.080
0.039	0.050	0.055	0.061	0.071	0.082
0.032	0.042	0.046	0.051	0.061	0.072
0.047	0.071	0.083	0.095	0.120	0.144

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、鍍镉、複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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