IS 1367


Mechanical properties of fasteners made of carbon steel and alloy steel As Per IS 1367

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.


IS 1367 Grades
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