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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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: U! F* z4 p5 w3 ~9 Z: O; w9 W, }* e 美制螺纹（螺纹牙型角60度）Thread of American standard ( Thread pitch shape angle 60°7 a9 o( O* I+ ], N2 n$ c/ t
UNC－－－－统一制粗牙螺纹（代替NC）Unified coarse pitch thread ( Instead of NC ). W5 I, G# O" u" ~6 z
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UNF－－－－统一制细牙螺纹（代替NF）Unified fine pitch thread ( Instead of NF )
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; j% L/ i- Q0 Q) G j UNEF－－－－统一制超细牙螺纹Unified superfine pitch thread
5 o0 \- N( J4 f$ Y' C* g! U9 { UN－－－－－统一制不变螺距螺纹Unified thread
4 u, G; ~4 E# w5 E UNS－－－－统一制特殊螺纹Unified Special thread
7 c* ?% J* p1 B. P! ~ NPT－－－－一般用途锥管螺纹（旧代号Z;K）Taper pipe thread for general purpose ( Old
4 |. Y7 O3 j7 | thread code Z,K )
0 Y8 g' a" J( v# r; J NPSC－－－－管接头直管内螺纹Internal straight pipe thread for connection+ A- E. e2 h0 Q& r
NPSM－－－－设备上自由配合，机械连接用直管螺纹Straight pipe thread for general purpose, o* r% |" v L2 d2 t
NPTF－－－－干密封锥管螺纹Dryseal taper pipe thread4 C) r2 D) v1 S8 X- [2 e
NPSF－－－－干密封燃油直管螺纹Dryseal straight pipe internal thread, E( {9 c. x7 X7 I# |
NGT－－－－气瓶用锥螺纹Special thread for gas cylinder |
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