MewuDecor M3 Threaded Inserts, M3 x 4mm x 5mm Metric knurled Nuts, 100 PCS

Material: The threaded inserts for 3D printing are made of high quality brass, extremely sturdy, not easy to break or deform. , Feature: The embedding nut has a guide so there is no need for a counterbore or countersink. Smooth surface, firm and uniform, easy to install. , Application: Can be installed by ultrasonic or heat into the plastic matrix, or formed during the injection, widely used in 3D printing injection molding to achieve tight fixation. , Thread Size: M3; Overall Size: 4mm x 5mm / 0. 16" x 0. 20"(L*OD. , Package Included: 100 PCS x 3D Printing Brass Nut.