Wedge Lock Washers DIN25201

Double fold self-locking washer Wedge locking washers are generally installed under the nut to prevent the nut from loosening.

DIN 603 Carriage Bolt

​DIN 603 - 2017 Cup Head Square Neck Bolts Specification for stainless steel round head square neck bolts (carriage bolts): German standard DIN603 Material: carbon steel, Q235, 45# steel, stainless steel Nominal diameter: 5mm--20mm Length: 15mm--300mm Surface treatment method: zinc plating, chrome plating, copper plating, surface blackening.

DIN 963 Slotted Flat Head

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.

High Strength Hexagon Bolts

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.