Hexagonal bolts or hex bolts have a hexagonal shaped head, sometimes called machine bolts or hex caps, finishes available include self colour and zinc. As one of the largest fasteners and fixings suppliers online we stock an extensive range of hex bolts in all size diameter and lengths. Established in 1868 Francis Kirk and Son has over 153 years of experience in bolts, Socket Caps, sets and anchoring products. Struggling to find what you're looking for? No worries, give our friendly expert fastener sales team a call. We don't just stock standard screws and bolts, we also hold a huge range of non standard socket screws. Next day delivery available.