Homesmiths G.I Bolts & Nut 12 X 50 is made using high-quality and durable materials that ensure long-lasting utility. The bolt's shank features an aggressive thread design that is inserted into a pre-drilled hole and the nut is threaded to fasten it in place securely. The under head of the bolt locks itself preventing it from spinning and holding it in place during fastening. These bolts and nuts are suitable for outdoor applications such as fencing, timber frame and retaining walls.