抄録
On revising Japanese Industrial Standard of spring lock washer, the auther was in charge of drawing up a revision plan as a member of spring lock washer sub-committee. Many weak and irrational points were found in the present standard by calculating fibre stress and load for solid compression, and these have been revised in the new standard.
Attention has been given to have the size of sections of washer conform as much as possible to the SAE standard to reduce the number of calibers at factories where washers of SAE-and JIS-size are to be produced.