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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：
5 H3 x; B o3 V/ F$ _! I9 I4 t6 e! z* j+ e' o2 w/ \: u
美制螺纹（螺纹牙型角60度）Thread of American standard ( Thread pitch shape angle 60°
* Z# a9 T6 h- v' L* i/ G; j9 x8 a UNC－－－－统一制粗牙螺纹（代替NC）Unified coarse pitch thread ( Instead of NC ); P. H5 Z$ {* |, ]- S9 r
: T3 e8 q$ Y5 H9 ?& w
UNF－－－－统一制细牙螺纹（代替NF）Unified fine pitch thread ( Instead of NF )- a6 P+ P, h: s; U! p0 x/ Y
& S. R. G* o$ o2 g4 K UNEF－－－－统一制超细牙螺纹Unified superfine pitch thread# L2 K8 v3 H2 K# j4 l! N
UN－－－－－统一制不变螺距螺纹Unified thread9 u4 ^8 f9 ]( Y: D
UNS－－－－统一制特殊螺纹Unified Special thread/ {% ^$ |( q8 g8 Q# `
NPT－－－－一般用途锥管螺纹（旧代号Z;K）Taper pipe thread for general purpose ( Old ! u, g) x; x9 a# `1 D, o
thread code Z,K )
' e4 {6 `1 [% u g8 L4 @6 t0 a/ c0 Q NPSC－－－－管接头直管内螺纹Internal straight pipe thread for connection
8 b) _: ~4 g$ h @& i NPSM－－－－设备上自由配合，机械连接用直管螺纹Straight pipe thread for general purpose
1 v! A3 P0 A% G* Y6 J/ T; h NPTF－－－－干密封锥管螺纹Dryseal taper pipe thread5 G6 f+ D0 |# N9 {* a
NPSF－－－－干密封燃油直管螺纹Dryseal straight pipe internal thread' _8 D$ p7 X- D2 \
NGT－－－－气瓶用锥螺纹Special thread for gas cylinder |
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