Boltmaster steel rod features coarse thread with zinc plated finish Manufactured in accordance with ASTM A-307 specifications to a commercial nut fit Clear zinc plated threaded rod is plated in accordance with ASTM B633 Type III specifications and ROHS complaint Boltmaster Steel Threaded Rod dimension is 12-inch length 3/8 to 16 inches thread size Used for assembly fastening, screw into threaded nuts or tapped holes Commonly used for manufacturing, automotive and construction industries