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DIN 963 Slotted Flat Head is mostly used where the surface of the part must not be raised after installation. The fastened part has two thicknesses. The so-called thick one means that the thickness of the fastened part is greater than that of the countersunk screw head.
Machine Screw is a type of screw that is usually designed to be fixed on a threaded hole on a metal surface. The difference between the types is mainly in the overall size, head shape, groove type, length, material and thread characteristics. It is widely used in machinery, electrical appliances and buildings.
High-strength bolts exert pre-tension and transmit external force by friction. Ordinary bolted connections rely on the shear resistance of the bolt and the pressure of the hole wall to transmit the shear force.
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