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3号沉頭方頸螺栓（标準頭）[Table 1] (A307, F468, F593, SAE J 429) ASME B 18.9 - 2012

選擇規格尺寸點擊↓

5/16

3/8

7/16

1/2

9/16

(5/8)

(3/4)

(7/8)

(1)

括号内尺寸為非優選

ASME B 18.9 - 2012 3号沉頭方頸螺栓（标準頭）[Table 1] (A307, F468, F593, SAE J 429)

尺寸單位: inch

美标ASME B18.9 - 2012 ASME18.9 18.9ASME 3号沉頭方頸螺栓（标準頭）[Table 1] (A307, F468, F593, SAE J 429)

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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号等級

螺紋規格
d

5/16

3/8

7/16

1/2

9/16

(5/8)

(3/4)

(7/8)

(1)

d
PP	UNC
d_s	最大值
	最小值
d_k	最大值
	尖角	最小值
	平角	最小值
k	最大值
	最小值
s	最大值
	最小值
e	最小值
R	最大值

0.3125	0.3750	0.4375	0.5000	0.5625	0.6250	0.7500	0.8750	1.0000
18	16	14	13	12	11	10	9	8
0.312	0.375	0.438	0.500	0.592	0.657	0.782	0.938	1.062
0.299	0.360	0.421	0.483	0.544	0.606	0.729	0.853	0.976
0.605	0.708	0.826	0.945	1.045	1.147	1.303	1.512	1.700
0.578	0.671	0.781	0.890	1.000	1.094	1.250	1.469	1.656
0.538	0.624	0.729	0.831	0.924	1.013	1.169	1.344	1.532
0.269	0.312	0.364	0.417	0.461	0.506	0.541	0.626	0.690
0.228	0.262	0.306	0.349	0.389	0.426	0.461	0.526	0.590
0.325	0.387	0.450	0.515	0.578	0.640	0.765	0.906	1.031
0.313	0.375	0.438	0.500	0.563	0.625	0.750	0.875	1.000
0.417	0.491	0.580	0.668	0.732	0.819	0.996	1.160	1.336
0.031	0.047	0.047	0.047	0.078	0.078	0.078	0.094	0.094

螺紋長度b

最小

替代列表

ANSI/ASME B 18.9 - 2007 ANSI/ASME B 18.9 - 2012

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 12603 - 2005

金屬熱處理工藝分類及代号

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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