Bolts, screws and studs with specified property classes — coarse thread and fine pitch thread
The IS 1367 Grade 8.8 specification covers carbon steel bolts and studs ranging from M-6 to M-39 diameter. We use high carbon steel material and high alloy steel raw materials to achieve the required properties in this standard. There are three popular grades in this standard, 8.8 , 10.9 and 12.9 which denote material hardness strength and their respective mechanical properties. Refer to the Mechanical Properties Chart for the subtle Strength differences within each grade.
|8.8||Hex bolts, screws, stud bolts, double ended studs, full thread rods, full threaded studs|
|10.9||Hex bolts, screws, stud bolts, double ended studs, Stud for foundation, wind energy bolts, Fasteners for wind turbines|
|12.9||Socket head cap screws, Allen bolts|