Material: threaded insert; Manufactured in-house from high quality brass which guarantees corrosion resistance. Thermal resistance to corrosion and conductivity, resistance to oxidation, high hardness, resistance to deformation under high pressure and good durability. Features: The geometry of the threaded sleeve means that it is firmly connected to the sleeve threaded. at the pressure part. Counter-spiral knurled nuts ensure very balanced tightening and loosening torques and high clamping forces. Purpose: The nut is made of high quality brass, which has excellent conductivity; heat resistance, corrosion resistance, oxidation resistance, high hardness, no deformation under high pressure, and good durability. Original CNC kitchen thread insert for inserting 3D printed plastic parts (PLA, PETG, ABS, etc.) Scope of delivery: 50 brass threaded nuts M2 x 4 mm.