Hex collar cap nut

四角焊接螺帽 

a) This metallic nut features a flanged base with serrated grooves encircling its body.

b) This part is used for secure fastening in mechanical assemblies, with features designed to resist loosening under vibration.

c) The external structure, the serrated grooves or knurls, enhances grip for improved stability. 

Asymmetrical steel stamped dowel obround edge

Hexagon flange white nylon insert lock nut serrations 

a). Prevailing torque type hexagon nuts feature a design where increased friction within the threads prevents the nut from loosening on its own. This friction is generated by the prevailing torque element integrated into the nut, which induces axial and/or radial clamping in the bolted connection.

b). DIN 980 (Type M) Two-piece metal nuts are nuts in which enhanced friction is achieved by inserting an additional metal element into the prevailing torque mechanism of the nut. However, this type does not have full loadability.

a) A square weld nut with prongs or projections is a type of fastener designed for welding to a metal surface. It is a square-shaped nut with four prongs on one side, which assist in the welding process and provide additional stability during installation.

b) Nycote prevents adhesion of weld spatter. This protective coating also improves lubricity and reduces installation drive friction.