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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：9 P& R$ T) E) V" v5 j3 o. [
& g$ e: S- P: J0 h 美制螺纹（螺纹牙型角60度）Thread of American standard ( Thread pitch shape angle 60°
: K4 Y( b/ c/ z: u# H UNC－－－－统一制粗牙螺纹（代替NC）Unified coarse pitch thread ( Instead of NC )
m- w( F7 D* d8 Q9 O5 u" { p/ b
UNF－－－－统一制细牙螺纹（代替NF）Unified fine pitch thread ( Instead of NF )# \, t! l8 P5 S8 l+ R6 j5 M% J
; t3 T9 T. \7 s% q UNEF－－－－统一制超细牙螺纹Unified superfine pitch thread
8 r! i) w( W2 E, |, F! _ UN－－－－－统一制不变螺距螺纹Unified thread4 Q/ e& J7 h3 c9 e4 t
UNS－－－－统一制特殊螺纹Unified Special thread
! |/ o: H* z; D+ l NPT－－－－一般用途锥管螺纹（旧代号Z;K）Taper pipe thread for general purpose ( Old & [1 _- f/ ~; A3 A! z+ _
thread code Z,K )6 G, s7 [0 f& p. {* z" x0 p8 ~# Z8 m
NPSC－－－－管接头直管内螺纹Internal straight pipe thread for connection
9 ~* u1 E& F% d! | NPSM－－－－设备上自由配合，机械连接用直管螺纹Straight pipe thread for general purpose
' ?4 w& \& G5 N/ H NPTF－－－－干密封锥管螺纹Dryseal taper pipe thread1 L, q7 \1 m% F9 ~
NPSF－－－－干密封燃油直管螺纹Dryseal straight pipe internal thread1 g6 w& z6 b% J- X9 o
NGT－－－－气瓶用锥螺纹Special thread for gas cylinder |
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