These Stud bolts are manufactured in stainless steel, carbon steel and alloy steel grades like 8.8, 10.9, 12.9, SS304, SS316, SS316L, SS316 S31, B7, L7, 8M, B8 etc. These are used in critical applications and are widely used in wind mill installations. we offer Stud bolts According to ASME B1.1, DIN 965, DIN 976, A193, A320, DIN 2510 etc. or as per customer requirement. Bigboltnut manufactured bolt and nut for wind mill, Aerospace, Railways, bridge Construction