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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：& I' T! }$ W& W
9 {" O8 c. I& U) A 美制螺纹（螺纹牙型角60度）Thread of American standard ( Thread pitch shape angle 60°
% r* x4 ^" |6 P# ~" p1 I UNC－－－－统一制粗牙螺纹（代替NC）Unified coarse pitch thread ( Instead of NC )' `; ?* }0 b4 j% @0 o5 r3 U
" T& E* F8 g! W9 B+ U; z UNF－－－－统一制细牙螺纹（代替NF）Unified fine pitch thread ( Instead of NF )9 X1 h! B( c6 F; W
$ ]8 \% |: D' ^6 m5 y3 }, N UNEF－－－－统一制超细牙螺纹Unified superfine pitch thread+ Z3 L) z/ i$ A8 g p0 z- n
UN－－－－－统一制不变螺距螺纹Unified thread
5 @9 j, |# Q V UNS－－－－统一制特殊螺纹Unified Special thread* O! x k$ q* Y" D- {8 D7 E
NPT－－－－一般用途锥管螺纹（旧代号Z;K）Taper pipe thread for general purpose ( Old 0 s- c$ Q9 z+ ~
thread code Z,K )" f6 {5 F' D P& O# E* u
NPSC－－－－管接头直管内螺纹Internal straight pipe thread for connection5 J; M& \8 e2 p8 m3 `% _8 j
NPSM－－－－设备上自由配合，机械连接用直管螺纹Straight pipe thread for general purpose m; |4 M) r2 ]4 ]3 d- o
NPTF－－－－干密封锥管螺纹Dryseal taper pipe thread
4 w2 J7 I9 s' c' W2 H4 B NPSF－－－－干密封燃油直管螺纹Dryseal straight pipe internal thread
0 P- @9 W+ {' S4 j/ @8 ~5 R8 U NGT－－－－气瓶用锥螺纹Special thread for gas cylinder |
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