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首页 产品与标准 ASME B 18.6.3 (T25-III+T40) - 2013 四方槽大扁头 AB ABR自攻螺钉

四方槽大扁头 AB ABR自攻螺钉 ASME B 18.6.3 (T25-III+T40) - 2013

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2#

3#

4#

5#

6#

7#

8#

10#

12#

1/4

5/16

3/8

ASME B 18.6.3 (T25-III+T40) - 2013 四方槽大扁头 AB ABR自攻螺钉

尺寸单位: inch
美标ASME B18.6.3 (T25-III+T40) - 2013 ASME 四方槽大扁头 AB ABR自攻螺钉
ASME B 18.6.3 (T25-III+T40) - 2013 四方槽大扁头 AB ABR自攻螺钉
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公差
螺纹尺寸
d
2# 3# 4# 5# 6# 7# 8# 10# 12# 1/4 5/16 3/8
d 公称
PP
槽号
M 参考值
P 最大值
最小值
dk 最大值
最小值
k 最大值
最小值
R 最大值
L0 ⑥ 公称
Y ⑥ 螺纹过渡长度(全螺纹) 最大值
b ⑥ 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
32 28 24 20 20 19 18 16 14 14 12 12
00 0 0 1S 1S 1S 2S 2R 3S 3S 4R 4R
0.050 0.070 0.070 0.091 0.091 0.091 0.112 0.112 0.133 0.133 0.191 0.191
0.033 0.038 0.038 0.055 0.055 0.055 0.063 0.075 0.080 0.080 0.100 0.100
0.028 0.028 0.028 0.040 0.040 0.040 0.048 0.060 0.065 0.065 0.085 0.085
0.194 0.226 0.257 0.289 0.321 0.352 0.384 0.448 0.511 0.573 0.698 0.823
0.180 0.211 0.241 0.272 0.303 0.333 0.364 0.425 0.487 0.546 0.666 0.787
0.053 0.061 0.069 0.078 0.086 0.094 0.102 0.118 0.134 0.150 0.183 0.215
0.044 0.051 0.059 0.066 0.074 0.081 0.088 0.103 0.118 0.133 0.162 0.191
0.129 0.151 0.169 0.191 0.211 0.231 0.254 0.283 0.336 0.375 0.457 0.538
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
0.031 0.036 0.042 0.050 0.050 0.053 0.056 0.062 0.071 0.071 0.083 0.083
0.520 0.590 0.670 0.750 0.830 0.910 0.980 1.140 1.300 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,方槽内壁略带锥度，以保证插入深量规与有镀层螺钉凹槽的配合。为使插入深测量深度适用于有涂镀层的螺钉，制造者在生产（镦头）时，应为其留出必要的加工余量。
③,表中的“R”表示正常插入深入。“S”表示短（浅）插入深度。
④,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。
⑤,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。
⑥,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 18.6.3T25-III+T40 - 2013 ASME B 18.6.3H7B-III+T1A - 2024

采用标准

工艺相关

ASME B 18.6.3 (T24) - 2013
开槽扁圆头螺钉 [Table 24] (ASTM F837, F468)
ASME B 18.6.3 (T24+T40) - 2013
开槽扁圆头 AB ABR自攻螺钉
ASME B 18.6.3 (T25-I/T25-IA) - 2013
十字槽大扁头螺钉 I、IA型
ASME B 18.6.3 (T25-I/T25-IA+T40) - 2013
十字槽大扁头 AB ABR自攻螺钉
ASME B 18.6.3 (T25-III) - 2013
四方槽大扁头螺钉
ASME B 18.6.3 (T25-VI) - 2013
梅花槽大扁头螺钉
ASME B 18.6.3 (T25-VI+T40) - 2013
梅花槽大扁头 AB ABR自攻螺钉

引用参考

GB /T 3098.5 - 2016
紧固件机械性能 - 自攻螺钉
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 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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