Standard:DIN6914,ASTMA325M-1/A490M-1,AS1252, BS4395 Part 1,BS4395 part 2, JIS B1186 
Material:Alloy Steel
Finished:PLAIN, ZP, ZYP, BLACK, HDG,DACROMET
Class / Grade: Class  10.9
Diameter:M12 - M36 & 1/2" -1-1/2"