Through bolt (L) 120mm (Dia) 12mm, Pack of 4 | Departments | DIY at B&Q M12 Bolts M12x80 High Tensile Bolt Grade 8.8 Bright Zinc Plated | Zinc Through Bolts Choose from our selection of zinc-coated bolts, including hex head screws, socket head screws, and more. Same and Next Day Delivery APPLICATIONS Fixing brickwork support angles to concrete Fixing heavy machinery Securing vehicle barriers Installing curtain walling systems Cladding restraint steelwork KEY ATTRIBUTES Substrate hold size same as the bolt diameter allowing installation through the fixture Cold formed body profile and thread for consistent performance and optimum strength. Machine Bolt A4-70 at Oneida Roberson blog Fixing brickwork support angles to concrete., Fixing Heavy machinery , Securing vehicle barriers