• SERRATED JIS B 1190 DIN 6923 Japanese Industry Standard fasteners have a smaller hex dimension than their more common DIN counterparts and fit those tight spots where the hex of a DIN fastener is too large. JIS. fasteners are often used on import cars. These types of nuts are designed to remove the deficiencies commonly associated with the use of washers and commonly used for high strength automotive applications.

Similar to EN 1661, GB 6177.1, ISO 4161