What Are The Manufacturers & Suppliers Of Stud Bolts? Mitul Industries for flange connections Stud Bolts and Hex Bolts are used. The Stud Bolt is a threaded rod with 2 heavy hexagon nuts, while the Hex Bolt has a head with one nut. Nuts and head are both six sided. Thread rods and nuts must be marked by the Stud Bolt Manufacturers in India with a unique identifier to identify the manufacturer or private label distributor, as appropriate. Below a number of ASTM examples. Mitul Industries has been Stud Bolt Manufacturers in India since 1995 & shipped to Countries like UAE & India. The quantity of bolts for a flange connection will be given by the number of Foundation Bolt Manufacturers in India holes in a flange, diameter and length of Stud bolts is dependent of flange type and Pressure Class of flange. Used in high pressure bolting situations for pipeline, drilling, petroleum / petrochemical refining and Mitul Industries for sealing and flange connections all thread, tap end and double end stud bolts are the lion’s share of the Mitul Industries. The all thread Stud Bolt Manufacturers in India is a threaded rod with 2 heavy hex nuts, while the tap end and double end are nut continuously thread, but have a body in the middle with one nut. In a tap end the short end of the stud bolt is designed with a UNC 3A fit to go into a tapped hole on the body of larger machined or forged equipment.