uxcell 50pcs Insert Nuts with Knobs, M3 Female Thread Bit Inserts, 4x5mm, Brass, Embedded Nuts, for Repair Equipment and Furniture, Gold Finish

Specifications - Screw size: M3 x 0.5mm (diameter * pitch); Overall size: 4mm x 5mm / 0.16" x 0.2" (length * outer diameter); Package contents: 50pcs x Insert nuts with knobs Material - Made of brass, it has high hardness and durability. It has improved corrosion resistance and heat resistance and provides good mechanical properties. Features - The embedded nuts have guides, so no counterbore or countersink is required. The surface is smooth, firm and uniform, and easy to install. Advantages - The outer diameter of the insert is embossed, so after forming, it forms a certain frictional force and interlocking force with the brass insert, allowing it to be fixed inside and not easily come off. It has a certain twist and tension. Applications - It can be attached to a plastic matrix using ultrasound or heat, or formed during injection. It is widely used for secure fixing in 3D printing injection molding, computer products, electronic products, circuit board fixing, etc.