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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：
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. Y7 k- [4 X. j6 \0 G8 I 美制螺纹（螺纹牙型角60度）Thread of American standard ( Thread pitch shape angle 60°/ S3 L' o9 w( K
UNC－－－－统一制粗牙螺纹（代替NC）Unified coarse pitch thread ( Instead of NC )
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" w, z9 ?4 B2 F9 y3 C8 R2 l) e UNF－－－－统一制细牙螺纹（代替NF）Unified fine pitch thread ( Instead of NF )
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UNEF－－－－统一制超细牙螺纹Unified superfine pitch thread! ~ n3 a& t6 w0 Z
UN－－－－－统一制不变螺距螺纹Unified thread! n( R% W7 g7 |- I4 K6 ]
UNS－－－－统一制特殊螺纹Unified Special thread5 |' J# l, g, I" P" D! x7 M
NPT－－－－一般用途锥管螺纹（旧代号Z;K）Taper pipe thread for general purpose ( Old
9 ~4 s- {' ~5 G4 d8 \2 p4 {" c thread code Z,K )
& E% S1 ]: X" X$ G) G6 @: @ NPSC－－－－管接头直管内螺纹Internal straight pipe thread for connection5 M# ^: y3 i$ g6 Q
NPSM－－－－设备上自由配合，机械连接用直管螺纹Straight pipe thread for general purpose
& r: n4 o7 y- R8 s9 F4 S* Q NPTF－－－－干密封锥管螺纹Dryseal taper pipe thread7 y, |/ q0 j' |
NPSF－－－－干密封燃油直管螺纹Dryseal straight pipe internal thread8 T0 S9 g: ~ x: l& L
NGT－－－－气瓶用锥螺纹Special thread for gas cylinder |
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