Stud bolt , nuts, machine bolts and washers are also known as bolting material or fastener. Bolting is the term that used to tighten / create the flange joints connection. Types of Bolts . In Petro and chemical industry 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 … Mar 04, 2018 A Stud, Bolt or a Screw belong to the category of Fasteners. However they all have their own specialised utility. Stud or Threaded Rod: A stud is threaded on both ends and has no head.The threads may or may not extend the full length of the piece.

Company. We offer a full line of threaded steel rod and stud products as well heremodity hex bolts , nuts and washers in Carbon, Alloy and Stainless Steels, including ASTM A193 Grades B7, B7M, B8 (304 SS), B8M (316 SS). : a bolt with threads on both ends designed to be screwed permanently into a fixed part at one end and to receive a nut on the other What is a stud bolt ? Stud bolts for flanges consist of a fully threaded steel rod and two heavy hexagonal steel nuts. Stud bolts are inserted in the flange holes and tightened to seal a flanged joint.