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各种螺纹形式代表的含义

时间:2015-06-10 12:34来源:互联网 作者:云顶娱乐平台_云顶娱乐官网_云顶娱乐网站
螺纹代号Thread Code 一、英制螺纹(螺纹牙型角55度)Thread of British standard ( Thread pitch shape angle 55) BSW----英国标准惠氏螺纹(粗牙)British Standard Whitworth Thread ( Coarse ) BSF----英国
  螺纹代号Thread Code
  一、英制螺纹(螺纹牙型角55度)Thread of British standard ( Thread pitch shape angle 55°)
  BSW----英国标准惠氏螺纹(粗牙)British Standard Whitworth Thread ( Coarse )
  BSF----英国标准惠氏螺纹(细牙)British Standard Whitworth Thread ( Fine )
  G----直管螺纹(外螺纹分A、B两面级、丝锥分G、G-D)Straight pipe thread ( Outside )
  thread in A\B: taps in G、G-D )
  R----锥管外螺纹(旧代号ZG;KG)Outside paper pipe thread ( Old thread code  ZG,KG )
  RC----锥管内螺纹(旧代号ZG;KG)Inside taper pipe thread ( Old thread code ZG,KG )
  二、美制螺纹(螺纹牙型角60度)Thread of American standard ( Thread pitch shape angle 60°
  UNC----统一制粗牙螺纹(代替NC)Unified coarse pitch thread ( Instead of NC )
  UNF----统一制细牙螺纹(代替NF)Unified fine pitch thread ( Instead of NF )
  UNEF----统一制超细牙螺纹Unified superfine pitch thread
  UN-----统一制不变螺距螺纹Unified thread
  UNS----统一制特殊螺纹Unified Special thread
  NB―――――美国标准锯齿螺纹American standard buttress threads
  NPT----一般用途锥管螺纹(旧代号Z;K)Taper pipe thread for general purpose ( Old
  thread code Z,K )
  NPSC----管接头直管内螺纹Internal straight pipe thread for connection
  NPSM----设备上自由配合,机械连接用直管螺纹Straight pipe thread for general purpose
  NPTF----干密封锥管螺纹Dryseal taper pipe thread
  NPSF----干密封燃油直管螺纹Dryseal straight pipe internal thread
  NGT----气瓶用锥螺纹Special thread for gas cylinder
  三、米制螺纹Metric thread
  ZM-----米制锥管螺纹 Metric taper pipe thread
  四、其它螺纹Other threads
  SM----缝纫机螺纹Thread for sewing machine
  PZ----气瓶用锥螺纹Special thread for gas cylinder
  5V1-20V1-气门芯螺纹5V1-20V1-Tyre valve thread
  螺纹代号说明示例:Explanation of thread code. e. g.
  1/4-20UNC
  1/4-公称直径1/4" nominal dia. 1/4"
  20-每寸20牙twenty teeth per inch
  UNC-美标统一制粗牙螺纹unified coarse pitch thread ( American standard(责任编辑:admin)