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梅花槽82°沉头 AB ABR自攻螺钉 ASME B 18.6.3 (H1B-VI+T1A) - 2024

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10#

12#

1/4

5/16

3/8

7/16

1/2

ASME B 18.6.3 (H1B-VI+T1A) - 2024 梅花槽82°沉头 AB ABR自攻螺钉

尺寸单位: inch

美标ASME B18.6.3 (H1B-VI+T1A) - 2024 ASME1 梅花槽82°沉头 AB ABR自攻螺钉

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公差

螺纹尺寸
d

10#

12#

1/4

5/16

3/8

7/16

1/2

d	公称
PP
槽号
M	参考值
P	最大值
	最小值
d_k	最大值
	最小值
k	参考值
α	最大值
	最小值
L₀ ^④	公称
Y ^④	螺纹过渡长度(全螺纹)	最大值
b ^④	螺纹长度 (长螺钉)	最小值

0.0730	0.0860	0.0990	0.1120	0.1250	0.1380	0.1510	0.1640	0.1900	0.2160	0.2500	0.3125	0.3750	0.4375	0.5000
42	32	28	24	20	20	19	18	16	14	14	12	12	10	10
T5	T6	T8	T8	T10	T10	T15	T15	T20	T25	T27	T40	T40	T50	T50
0.058	0.069	0.094	0.094	0.111	0.111	0.132	0.132	0.155	0.178	0.200	0.266	0.266	0.352	0.352
0.017	0.022	0.025	0.033	0.045	0.045	0.045	0.051	0.065	0.070	0.090	0.105	0.135	0.125	0.135
0.012	0.017	0.020	0.028	0.035	0.035	0.035	0.040	0.050	0.055	0.075	0.087	0.115	0.105	0.120
0.137	0.162	0.187	0.212	0.237	0.262	0.287	0.312	0.362	0.412	0.477	0.597	0.717	0.760	0.815
0.120	0.144	0.167	0.191	0.215	0.238	0.262	0.285	0.333	0.380	0.442	0.556	0.670	0.715	0.765
0.043	0.051	0.059	0.067	0.075	0.083	0.091	0.100	0.116	0.132	0.153	0.191	0.230	0.223	0.223
80°	80°	80°	80°	80°	80°	80°	80°	80°	80°	80°	80°	80°	80°	80°
82°	82°	82°	82°	82°	82°	82°	82°	82°	82°	82°	82°	82°	82°	82°
9/16	5/8	3/4	13/16	15/16	1	1-1/8	1-1/4	1-3/8	1-5/8	1-13/16	1-13/16	1-7/8	1-7/8	1-7/8
0.024	0.031	0.036	0.042	0.050	0.050	0.053	0.056	0.062	0.071	0.071	0.083	0.083	0.100	0.100
0.440	0.520	0.590	0.670	0.750	0.830	0.910	0.980	1.140	1.300	1.500	1.500	1.500	1.500	1.500

①, 若以小数规定公称直径，应省略小数前和小数点后第四位的零。
②,螺钉末端钉尖上不允许因螺纹辗压而形成的虚尖，允许略带圆弧或圆钝形末端。
③,小于等于8#的螺钉，螺纹牙顶平面宽度不应超过0.004in，大于8#的应不超过0.006in。
④,正常情况下，当螺钉长度小于等于其公称长度L0时应采用全螺纹，过渡螺纹长度应小于等于Y；若螺钉长度大于其公称长度L0可采用半牙型式，但其螺纹长度应不小于b。

替代列表

ASME B 18.6.3T2-VI+T40 - 2013 ASME B 18.6.3H1B-VI+T1A - 2024

长度公差

　　Tapping screws can be made to any length, but they are generally produced in fractional length increments of 1/16 in. for screws up to 1/2 in. long, 1/8 in. for screws over 1/2 in. through 1-1/2 in. long, 1/4 in. for screws over 1-1/2 in. through 3 in. long, and 1/2 in. for screws over 3 in. long.

类型	标称螺钉长度	长度公差
A、AB、BP	≤1	±0.03
A、AB、BP	＞1	±0.05
B、BF、BT、C、D、F、G、T、TRS	≤3/4	-0.03
	＞3/4,≤1-1/2	-0.05
	＞1-1/2	-0.06

引用参考

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 5280 - 2002

自攻螺钉用螺纹

注：技术数据仅供参考，请以官方原件为准！

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