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发表于 2007-6-20 12:50:10
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用UNF 螺纹代替：5 {7 e* u w( W
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美制螺纹（螺纹牙型角60度）Thread of American standard ( Thread pitch shape angle 60°6 e. F% Z+ h3 d) n
UNC－－－－统一制粗牙螺纹（代替NC）Unified coarse pitch thread ( Instead of NC )
& r, {/ D& v9 b# ]: z3 ]# {$ m
: O- K/ M5 X" N UNF－－－－统一制细牙螺纹（代替NF）Unified fine pitch thread ( Instead of NF )8 N1 U; [* L" I8 M
% d8 V+ T" W. f- r3 N UNEF－－－－统一制超细牙螺纹Unified superfine pitch thread
% f0 n p1 d) A9 y8 f UN－－－－－统一制不变螺距螺纹Unified thread
9 b/ Y6 u+ y+ e1 k+ s+ a. C3 U UNS－－－－统一制特殊螺纹Unified Special thread% ^6 m3 B8 {3 o& e
NPT－－－－一般用途锥管螺纹（旧代号Z;K）Taper pipe thread for general purpose ( Old
5 j' x! J4 s, F6 z# `% D# a thread code Z,K )! I* t7 N6 f! L c$ @) F0 x( D
NPSC－－－－管接头直管内螺纹Internal straight pipe thread for connection
; x. o8 z( J' J/ F4 G NPSM－－－－设备上自由配合，机械连接用直管螺纹Straight pipe thread for general purpose
6 L7 }/ Q0 c+ W" o2 ? NPTF－－－－干密封锥管螺纹Dryseal taper pipe thread% X) k5 d, b. Z7 _0 z1 s
NPSF－－－－干密封燃油直管螺纹Dryseal straight pipe internal thread
& @2 i( I8 ]3 y# j8 i. v NGT－－－－气瓶用锥螺纹Special thread for gas cylinder |
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