WA Socket, S Type

[Features]
· Embedded washer with sectional dimensions and shape identical to general use products specified for JISB1251 “Spring Washer” in JISB1176 “Hexagonal Socket Head Bolt, 10.9 Strength Classification” but with different inner and outer diameters.
· The mechanical characteristics of the embedded “Spring Washer” comply with JIS standards.
· As far as the strength classification of 10.9 of the bolt is concerned, trouble caused by plating is reduced.