当前位置:首页>技术服务 > 技术资料 > 国际螺纹标准 > Whitworth Fine DIN LON special
Whitworth Fine Thread DIN 30284 and DIN LON (30)293

Attention!

Please do not mistake this thread for the Whitworth Fine Thread BS 84. This thread is an old one which is not used anymore. The nominal diameter and the pitch are mentioned in millimeters or in TPI.
Used in locomotive construction approx. until 1975.
The flank angle is 55°.

Repair sizes for locomotive construction, DIN 30284.

Diameter for bolt and nut

Thread Size Tapping Drill Size Core Area TPI Pitch
mm cm2 mm
W 14 x 1/12" DIN 30284 11.290 1.00 12 2.117
W 15 x 1/12" DIN 30284 12.290 1.18 12 2.117
W 17 x 1/11" DIN 30284 14.042 1.54 11 2.309
W 18 x 1/11" DIN 30284 15.042 1.77 11 2.309

点击关闭