Homesmiths G.I Bolts & Nut 10 X is used for fixing timber or timber to steel. The threaded shank is inserted into a pre-drilled hole and the nut is threaded on to the shank to fasten the timber. It is ideal for use on timber frames, fencing, furniture, and retaining walls. The under the head of the bolt locks into the timber preventing the head from spinning when tightened. They are suitable for treated timber and most outdoor application.