... fasteners, you can choose mainly materials between 200, 201,202, 304 , 316(A2, A4), 304L, 316L, B8, B8M etc ... , you can choose mainly materials between 200, 201,202, 304 , 316(A2, A4), 304L, 316L, B8, B8M etc ... U-bolts; Carriage bolts, hex bolts & hex nuts, heavy nuts, nylon lock nuts, flat washers, spring washers etc. Other products ... and environment engineering. stainless steel stud rod with nuts