Special big collar hinge pin with internal threads

Screw end and pin end

Industrial application

a) External hexalobular socket (6 lobe) / metric thread / self tapping thread for thermoplastics.

b) A double-end stud with collar is a type of fastener that features threaded ends on both sides and a non-threaded central collar or flange. Thread types of both sides can be customized according to customer's request, differen surface treatment is available upon request. 

a.) A hexalobular socket spherical screw is a specialized fastener designed for securely joining thermoplastic components, and the thin collar enhances the fastening strength and distributes the load.

b.) The tapping thread for thermoplastics provides excellent thread engagement and pull-out resistance.

a) Clinch studs, also known as self-clinching studs, are fasteners used in sheet metal fabrication and other applications where strong, permanent fastening is required. They typically consist of a threaded stud with a knurled or serrated shank and a flat or flanged head.

b) The installation process involves inserting the clinch stud into a pre-punched or drilled hole in the metal sheet. Then, using a press or similar tool, the knurled portion of the stud is compressed into the surrounding metal, creating a secure and permanent attachment without the need for welding or additional hardware. They offer advantages such as high strength, resistance to vibration, and a low-profile installation.