These stainless steel threaded inserts are machined from 303 stainless steel with a double twill knurl crossing in two directions, so the SL type knurled insert nut resists rotation under torque rather than gripping on one helix alone. Threads run from M2 to M20, and the size chart details M2 to M8 with inside diameter, pitch, outside diameter and slot width. Because the body is stainless steel rather than brass, these insert nuts for plastic molding suit housings that must stay clean and resist rust in humid indoor service. Ultrasonic, heat, press-in, expansion press-in and self-tapping installation are all supported, each aiming at a flush finish. Length, knurl, finish and packaging can be customized.

These heat insert nuts are machined from BG brass, a golden brown material that resists rust and keeps its lustre. Straight, cross and diamond knurling can be produced for different grip, and the CNC-turned thread covers M2 to M20, with M2 to M8 detailed in the size chart. As brass knurled inserts, they hold a reusable metal thread in thermoplastic: the knurl bites into the softened wall, so a screw can be driven and reopened without stripping the plastic. That makes them threaded inserts for 3D printing, molded housings and electronic enclosures. Plain, tin-plated and nickel-plated finishes are available, lengths and knurl patterns can be adjusted, and packaging, labels and box contents can be customized.