这个单位是什么意思?
terminal screws shall have a declared outside diameter of not less than 3mm or be not less than 6 B.A请问,这个B.A是什么意思,有详细的说明吗.谢谢!
Screw NumbersDiameter of Screw
Over ThreadThreads per inchPitchDiameter
at Thread BottomTapping Drill Size
16 BA0.0310 inch133.3 tpi0.0075 inch 0.0220 inchNumber drill 73
0.6 mm
0.0236 inch
15 BA0.035 inch120.5 tpi0.0083 inch0.025 inchNumber drill 70
0.7 mm
0.0276 inch
14 BA0.039 inch109.9 tpi0.0091inch0.028 inch0.8 mm
0.0315 inch
13 BA0.047 inch102 tpi0.0098 inch0.0352 inchNumber drill 62
0.98 mm
0.0386 inch
12 BA0.051 inch90.9 tpi0.011 inch0.0378 inchNumber drill 60
1.05 mm
0.0413 inch
11 BA0.059 inch81.9 tpi0.0122 inch0.0443 inchNumber drill 56
1.2 mm
0.0472 inch
10 BA0.067 inch72.6 tpi0.0138 inch0.0504 inchNumber drill 54
1.4 mm
0.0551 inch
9 BA0.075 inch65.1 tpi0.0154 inch0.0565 inch1.55 mm
0.061 inch
8 BA0.086 inch59.1 tpi0.0169 inch0.0657 inchNumber drill 50
1.8 mm
0.0709 inch
7 BA0.0982 inch52.9 tpi0.0189 inch0.0753 inchNumber drill 46
2.05 mm
0.0807 inch
6 BA0.11 inch47.9 tpi0.0209 inch0.0849 inch2.3 mm
0.0906 inch
5 BA0.126 inch43 tpi0.0232 inch0.0981 inchNumber drill 37
2.65 mm
0.1043 inch
4 BA0.1420 inch38.5 tpi0.0260 inch0.1108 inchNumber drill 31
3 mm
0.1181 inch
3 BA0.1610 inch34.8 tpi0.0287 inch0.1266 inchNumber drill 29
3.4 mm
0.1339 inch
2 BA0.1850 inch31.4 tpi0.0319 inch0.1467 inchNumber drill 22
4 mm
0.1575 inch
1 BA0.2090 inch28.2 tpi0.0354 inch0.1665 inchNumber drill 16
4.5 mm
0.1772 inch
0 BA0.2360 inch25.4 tpi0.0394 inch0.1887 inchNumber drill 9
5.1 mm
0.2008 inch
H-RH 发表于 2013-5-3 16:10 static/image/common/back.gif
不知道此文章的出处在哪里呀 灵魂在呐喊 发表于 2013-5-3 16:49 static/image/common/back.gif
不知道此文章的出处在哪里呀
http://www.britishfasteners.com/threads/
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