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标题: 这个单位是什么意思? [打印本页]

作者: 灵魂在呐喊 时间: 2013-5-3 16:00
标题: 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!

作者: H-RH 时间: 2013-5-3 16:10

Screw Numbers	Diameter of Screw # b/ F9 i+ Y. e) D" A0 {3 Q' sOver Thread	Threads per inch	Pitch	Diameter ( o2 }9 a0 f+ g( y# J& p at Thread Bottom	Tapping Drill Size
16 BA	0.0310 inch	133.3 tpi	0.0075 inch	0.0220 inch	Number drill 73 ' d4 w$ x# L; P2 [6 `0.6 mm 3 B+ P, R$ t$ @" R0.0236 inch
15 BA	0.035 inch	120.5 tpi	0.0083 inch	0.025 inch	Number drill 706 _& d# t9 j3 x 0.7 mm + Y" h. \, M8 u; y t0.0276 inch
14 BA	0.039 inch	109.9 tpi	0.0091inch	0.028 inch	0.8 mm9 z3 \|& @- x6 o 0.0315 inch
13 BA	0.047 inch	102 tpi	0.0098 inch	0.0352 inch	Number drill 625 k2 r! w* q' A. B! E' W 0.98 mm* l5 i- F$ [: R 0.0386 inch
12 BA	0.051 inch	90.9 tpi	0.011 inch	0.0378 inch	Number drill 60 + q: Z$ P! i% Q+ D3 t1.05 mm3 R, {0 P) H! d5 R 0.0413 inch
11 BA	0.059 inch	81.9 tpi	0.0122 inch	0.0443 inch	Number drill 569 @7 Q u+ j# V \0 ~% H$ } 1.2 mm; C- o* B2 N0 @9 @0 S 0.0472 inch
10 BA	0.067 inch	72.6 tpi	0.0138 inch	0.0504 inch	Number drill 54 B) i8 L% q6 ` 1.4 mm , A& S+ r$ v: V3 r0.0551 inch
9 BA	0.075 inch	65.1 tpi	0.0154 inch	0.0565 inch	1.55 mm/ \/ l$ \. C; K4 e: @ 0.061 inch
8 BA	0.086 inch	59.1 tpi	0.0169 inch	0.0657 inch	Number drill 500 C' }6 [' r0 P( B; X6 }* f 1.8 mm ! `8 k, z0 D- H- }3 C( u2 G+ o0.0709 inch
7 BA	0.0982 inch	52.9 tpi	0.0189 inch	0.0753 inch	Number drill 46 * N3 d, h3 _! y2 z( v2.05 mm7 q5 T" }* t2 F8 U7 a 0.0807 inch
6 BA	0.11 inch	47.9 tpi	0.0209 inch	0.0849 inch	2.3 mm 9 a* a# i2 R' P- p1 f$ ~; X% r& {0.0906 inch
5 BA	0.126 inch	43 tpi	0.0232 inch	0.0981 inch	Number drill 37 ! D1 w* A) e& Y& ]; Y2.65 mm/ {' H. p5 D% O+ _4 J; R0 P 0.1043 inch
4 BA	0.1420 inch	38.5 tpi	0.0260 inch	0.1108 inch	Number drill 31, F% K" r. u; u& l1 s! Z 3 mm $ K& p3 E9 \|# e; U, ]4 ^8 L0.1181 inch
3 BA	0.1610 inch	34.8 tpi	0.0287 inch	0.1266 inch	Number drill 299 y; [" m7 P2 @+ X `$ d0 q, t 3.4 mm* E8 h8 O' D7 r! w9 R/ B 0.1339 inch
2 BA	0.1850 inch	31.4 tpi	0.0319 inch	0.1467 inch	Number drill 22, x2 H. d; g& C/ \| 4 mm 5 O/ ?5 M: D) r0.1575 inch
1 BA	0.2090 inch	28.2 tpi	0.0354 inch	0.1665 inch	Number drill 16 k* r, I/ ^& X" s 4.5 mm & k0 S6 h0 m$ N& o% m6 W! K' j! @1 @0.1772 inch
0 BA	0.2360 inch	25.4 tpi	0.0394 inch	0.1887 inch	Number drill 9 : t# ^+ a. V) o" ]5.1 mm ; X+ I$ X7 N0 b- G$ \|0.2008 inch

作者: 灵魂在呐喊 时间: 2013-5-3 16:49

H-RH 发表于 2013-5-3 16:10

不知道此文章的出处在哪里呀

作者: H-RH 时间: 2013-5-3 17:20

灵魂在呐喊发表于 2013-5-3 16:49 % ^* | s& }1 g2 F+ B/ ]2 x
不知道此文章的出处在哪里呀

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