Online Shop Scroll our online shop below for our large range of great quality fixings and fasteners. Concrete / Wood Self cut Store/Screws/Stainless Steel Screws/Concrete / Wood Self cutFixing timber battens, trunking, track and general components into concrete, masonry and timber Head style: 5/16” / 8mm across flats - hexagonal head Material grade: AISI 316/ A4 Shank Material: Stainless SteelRefine by Sort byWe recommendNewest arrivalsPrice: Low to HighPrice: High to LowName: A to ZName: Z to AFiltersClear allFiltersClear allShow itemsShow items6.3 x 32mm A4 316 Hex Head Masonry Screws Box of 1006.3 x 32mm A4 316 Hex Head Masonry Screws Box of 100£32.006.3 x 45mm A4 316 Hex Head Multi Fix Masonry Screws Box of 1006.3 x 45mm A4 316 Hex Head Multi Fix Masonry Screws Box of 100£39.006.3 x 57mm A4 316 Hex Head Multi Fix Masonry Screws Box of 1006.3 x 57mm A4 316 Hex Head Multi Fix Masonry Screws Box of 100£59.006.3 x 70mm A4 316 Hex Head Multi Fix Masonry Screws Box of 1006.3 x 70mm A4 316 Hex Head Multi Fix Masonry Screws Box of 100£55.006.3 x 82mm A4 316 Hex Head Multi Fix Masonry Screws Box of 1006.3 x 82mm A4 316 Hex Head Multi Fix Masonry Screws Box of 100£59.006.3 x 100mm A4 316 Hex Head Multi Fix Masonry Screws Box of 1006.3 x 100mm A4 316 Hex Head Multi Fix Masonry Screws Box of 100£65.006.3 x 160mm A4 316 Hex Head Multi Fix Masonry Screws Box of 506.3 x 160mm A4 316 Hex Head Multi Fix Masonry Screws Box of 50£104.96