Shop bolts from Grainger for all your fastener material needs. Bolts can secure material by applying pressure from the head of the bolt. Grainger carries eye bolts, which secure material through a circular opening. A threaded rod has a rounded head that allows for a better fit in tight applications and u-bolts have a square rounded edge for round surfaces. Grainger carries a wide selection of carriage bolts in various thread sizes to fasten and secure material.