Usually includes just a split lock washer or a flat washer.
You can obtain the official, full-text technical documentation through several authorized standards distributors: JIS B1188 Double Washer Sems
Because washers are pre-assembled, they eliminate the need for manual assembly on the production line, significantly reducing labor costs and the risk of dropped or missing parts. jis b 1188 pdf
Typically M2 to M12, with M3, M4, M5, and M6 being most common Clear Zinc, Yellow Zinc, Black Zinc, and Nickel Plating Key Components & Variations
The helical split lock washer provides constant tension to prevent the screw from loosening under mechanical stress. Usually includes just a split lock washer or a flat washer
The current version of the standard is , which superseded the 1995 version and its subsequent amendments.
Helical split lock washer, flat washer, or internal tooth washer The current version of the standard is ,
Features both a helical split lock washer (for tension) and a flat washer (to protect the surface).