Samac Countersunk Atlas Bolts ZYP M6 x 50mm - Box of 100 Manufactured from high tensile boron steel, and with 10 sharp thread forming teeth, the Atlas Bolt ensures fast and simple installation when used on a wide range of substrates. Suitable substrates include, concrete, concrete block, brick, timber, stone and marble. Atlas Bolts have a dual thread which ensures correct alignment when fitting, and can be completely removed. Dimensions Size: 6mm x 50mm Head Type: Countersunk Head Size: T-30 Bit Drill Size: 6mm Maximum Fixture Thickness: 20mm Benefits Manufactured from high tensile boron steel. Fast and simple installation. Fully removable. High loads with low expansion forces - an effective alternative to chemical anchors. Suitable for close to edge fixing. 10 sharp thread forming teeth. Available with 3 different screw heads: Countersunk, Hex Flange and Hex. Dual thread ensures correct alignment. Suitable for a wide range of substrates; from timber to marble. Tensile strength of 800N/mm2 after heat treatment. Please note, to achieve the published tension and shear loads, Atlas Bolts should be installed at least 10x the anchor diameter between each bolt and 10x the anchor diameter from the edge of the base material. If spacing or edge distance is reduced, users should apply the appropriate reduction multiplier to the published load to ascertain the correct load. For more technical data, please see the attached Data Sheet.