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发表于 2007-6-20 12:50:10
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来自： 中国广东广州
用UNF 螺纹代替：5 v- \# W: k+ o! Q9 n) }
. x. S$ G! q3 ]4 h3 u- @) ?
美制螺纹（螺纹牙型角60度）Thread of American standard ( Thread pitch shape angle 60°# E0 `, w! b% P. `. E
UNC－－－－统一制粗牙螺纹（代替NC）Unified coarse pitch thread ( Instead of NC )
" V+ a" K4 d1 X) `
$ d. A9 m$ k" G. J UNF－－－－统一制细牙螺纹（代替NF）Unified fine pitch thread ( Instead of NF )
7 B+ [4 }. m' g% Z; U7 a7 Q& D9 j8 K' m! B, ~
UNEF－－－－统一制超细牙螺纹Unified superfine pitch thread
# e6 B3 \# H' X& |- Y' g+ ~ UN－－－－－统一制不变螺距螺纹Unified thread# A) B& e( ?8 X7 U9 f0 r
UNS－－－－统一制特殊螺纹Unified Special thread
5 s7 Z! @# Y* g% Y6 U NPT－－－－一般用途锥管螺纹（旧代号Z;K）Taper pipe thread for general purpose ( Old + o8 }+ o2 b9 {& E1 p. n3 y
thread code Z,K )* I2 n. |2 G4 E c6 H6 B6 w
NPSC－－－－管接头直管内螺纹Internal straight pipe thread for connection
' P# M& s; k! z: v NPSM－－－－设备上自由配合，机械连接用直管螺纹Straight pipe thread for general purpose) m; O. ?/ m4 D3 C6 `6 X7 n
NPTF－－－－干密封锥管螺纹Dryseal taper pipe thread
1 r6 Y) w% C4 J8 x NPSF－－－－干密封燃油直管螺纹Dryseal straight pipe internal thread; `1 ]' q0 g- X0 X
NGT－－－－气瓶用锥螺纹Special thread for gas cylinder |
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