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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： y" }& `* Z% ^4 Z
3 i1 z0 S* e4 x" N# P 美制螺纹（螺纹牙型角60度）Thread of American standard ( Thread pitch shape angle 60°
! ~# h' \6 m$ n& b/ B* ~( } UNC－－－－统一制粗牙螺纹（代替NC）Unified coarse pitch thread ( Instead of NC ). @ I5 \1 A: s0 E1 a
9 g& P1 ?( M$ l, I/ l, Z4 M UNF－－－－统一制细牙螺纹（代替NF）Unified fine pitch thread ( Instead of NF )
6 }0 n- r, Z6 ^' b; [) Z/ s2 m# S) D# I* B" J: |6 v& |
UNEF－－－－统一制超细牙螺纹Unified superfine pitch thread: S$ Y: {, X4 I: E! _' H
UN－－－－－统一制不变螺距螺纹Unified thread
& G% G; \ a1 I, O7 ^3 Z$ k UNS－－－－统一制特殊螺纹Unified Special thread; q* t+ E# r0 a6 ^
NPT－－－－一般用途锥管螺纹（旧代号Z;K）Taper pipe thread for general purpose ( Old : J; {4 o i1 f$ Q" S
thread code Z,K )
0 G ^9 }5 h8 c- c NPSC－－－－管接头直管内螺纹Internal straight pipe thread for connection7 I C) G( G9 ?5 S
NPSM－－－－设备上自由配合，机械连接用直管螺纹Straight pipe thread for general purpose! |9 I" F5 y; R: j; |
NPTF－－－－干密封锥管螺纹Dryseal taper pipe thread- }7 z9 q7 Q: v" X/ s8 |
NPSF－－－－干密封燃油直管螺纹Dryseal straight pipe internal thread, u+ Q( c, C* A$ E0 ]( A
NGT－－－－气瓶用锥螺纹Special thread for gas cylinder |
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