Masonry Bolts - Hex - Exterior - Silver (8.0 x 75) Timco MF875PRE Designed to replace traditional expansion anchors TIMCO micro plating (Nano) technology gives a higher resistance to corrosion High-Low parallel threads for ease of insertion and high pull-out values Removable & adjustable non-expansion through fixing Unique concave thread configuration All steel, non-flammable fixing conforming to BS 7671 standard's 18th edition, which requires wiring systems to be supported by materials which are unlikely to prematurely collapse in the event of a fire. The TIMCO Masonry Bolts provide a stress-free, non-expansion through fixing solution for heavy-duty anchoring into various materials including concrete, brick, stone, wood, and concrete block. This innovative product replaces traditional anchors such as throughbolts, shield, sleeve, and drop-in anchors, offering superior performance and reliability. With a size of 8.0 x 75 and a pack quantity of 4, these bolts are engineered for ease of use and exceptional strength, making them an ideal choice for both professional and DIY applications.