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首页 产品与标准 ASME B 18.6.3 (H12A+T1A) - 2024 开槽圆头凸缘（带垫、带介） AB ABR自攻螺钉

开槽圆头凸缘（带垫、带介） AB ABR自攻螺钉 ASME B 18.6.3 (H12A+T1A) - 2024

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ASME B 18.6.3 (H12A+T1A) - 2024 开槽圆头凸缘（带垫、带介） AB ABR自攻螺钉

尺寸单位: inch
美标ASME B18.6.3 (H12A+T1A) - 2024 ASME18. 开槽圆头凸缘（带垫、带介） AB ABR自攻螺钉
ASME B 18.6.3 (H12A+T1A) - 2024 开槽圆头凸缘（带垫、带介） AB ABR自攻螺钉
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公差 最小破坏扭矩 牌号等级
螺纹尺寸
d
2# 3# 4# 5# 6# 7# 8# 10# 12# 1/4 5/16 3/8 7/16 1/2
d 公称
PP
dk 参考值
dc 最大值
最小值
k 最大值
最小值
c 参考值
n 最大值
最小值
t 最大值
最小值
L0 公称
Y 螺纹过渡长度(全螺纹) 最大值
b 螺纹长度 (长螺钉) 最小值
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
32 28 24 20 20 19 18 16 14 14 12 12 10 10
0.136 0.156 0.177 0.198 0.218 0.238 0.259 0.300 0.341 0.396 0.494 0.593 0.691 0.790
0.202 0.232 0.261 0.291 0.321 0.350 0.380 0.439 0.498 0.576 0.719 0.861 1.004 1.146
0.186 0.215 0.243 0.272 0.301 0.330 0.358 0.416 0.473 0.548 0.687 0.825 0.963 1.101
0.062 0.070 0.079 0.088 0.096 0.105 0.113 0.130 0.148 0.170 0.211 0.253 0.294 0.335
0.050 0.058 0.067 0.075 0.084 0.092 0.101 0.118 0.134 0.157 0.197 0.238 0.278 0.319
0.030 0.030 0.030 0.040 0.040 0.040 0.040 0.050 0.050 0.050 0.060 0.060 0.070 0.090
0.031 0.035 0.039 0.043 0.048 0.048 0.054 0.060 0.067 0.075 0.084 0.094 0.094 0.106
0.023 0.027 0.031 0.035 0.039 0.039 0.045 0.050 0.056 0.064 0.072 0.081 0.081 0.091
0.037 0.042 0.048 0.053 0.058 0.060 0.067 0.071 0.085 0.098 0.118 0.139 0.165 0.180
0.030 0.034 0.038 0.041 0.043 0.045 0.051 0.055 0.067 0.083 0.100 0.117 0.140 0.155
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
0.031 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
0.520 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 18.6.3T38+T40 - 2013 ASME B 18.6.3H12A+T1A - 2024

引用参考

GB /T 1172 - 1999
黑色金属硬度及强度换算值
GB /T 5267.1 - 2002
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 3106 - 2016
紧固件 - 螺栓、螺钉和螺柱 - 公称长度和螺纹长度 (ISO 888:2012, MOD)
GB /T 3 - 1997
普通螺纹收尾、肩距、退刀槽和倒角 (ISO 3508:1976 / ISO 4755:1983)
GB /T 5779.1 - 2000
紧固件表面缺陷 - 螺栓、螺钉和螺柱 - 一般要求
GB /T 5779.3 - 2000
紧固件表面缺陷 - 螺栓、螺钉和螺柱 - 特殊要求
GB /T 3103.1 - 2002
紧固件公差（螺栓、螺柱、螺钉和螺母）
GB /T 34632 - 2017
统一螺纹搓制和滚制前的毛坯直径
GB /T 18685 - 2017
普通螺纹搓制和滚制前的毛坯直径
GB /T 3105 - 2002
普通螺栓和螺钉 - 头下圆角半径
GB /T 5279.2 - 1997
沉头螺钉 第2部分 十字槽插入深度
GB /T 197 - 2018
普通螺纹 公差
注：技术数据仅供参考，请以官方原件为准！
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41 开槽大扁头自攻螺钉 AB型 [Table F1] [美标]
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42 开槽大扁头自攻螺钉 A型 [Table F1] [美标]
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44 开槽盘头自攻螺钉 C型(统一螺纹) [Table G1] [美标]
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45 开槽盘头自攻螺钉 A型 [Table G1] [美标]
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