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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：$ @8 j0 D; g+ ?3 q/ C4 W) t) O
, Z2 b$ x" \5 D4 M4 ?
美制螺纹（螺纹牙型角60度）Thread of American standard ( Thread pitch shape angle 60°. `9 b4 h& I1 W4 n% L1 u
UNC－－－－统一制粗牙螺纹（代替NC）Unified coarse pitch thread ( Instead of NC )7 ^" o3 U! t( J* u' y
* q4 [- H6 i" H6 p
UNF－－－－统一制细牙螺纹（代替NF）Unified fine pitch thread ( Instead of NF )+ S% L+ A# S" k' K5 U
7 g/ k) d6 C4 \0 D4 }3 M UNEF－－－－统一制超细牙螺纹Unified superfine pitch thread
! w. V4 |: t9 K& T. @* l5 t/ r" M; w UN－－－－－统一制不变螺距螺纹Unified thread D: z$ g# t0 o1 L' ~. O+ A0 I
UNS－－－－统一制特殊螺纹Unified Special thread
% @* G D F5 d( C7 L NPT－－－－一般用途锥管螺纹（旧代号Z;K）Taper pipe thread for general purpose ( Old
: i) t4 ]& }8 W. c2 V& Z thread code Z,K )
% s+ j+ l: J; A NPSC－－－－管接头直管内螺纹Internal straight pipe thread for connection. s, V, t, H, H$ @4 m
NPSM－－－－设备上自由配合，机械连接用直管螺纹Straight pipe thread for general purpose% w! I; ]8 h3 n* s( B5 v+ ]
NPTF－－－－干密封锥管螺纹Dryseal taper pipe thread+ U! `2 V8 o& r, x6 O
NPSF－－－－干密封燃油直管螺纹Dryseal straight pipe internal thread
" p0 L) [6 H. Z$ f NGT－－－－气瓶用锥螺纹Special thread for gas cylinder |
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