The M3x18 Internal Threaded Hex Stud ROHS manufactured by Shuntian is a fastener for mounting parts together with a hexagonal head on one end and threaded on the other end. The stud is made of high-grade stainless steel material which is corrosion and oxidation resistant, making the fastener highly durable and suitable for long-term use. The M3x18 has a metric size of 3x18mm, and the internal threads have a six-sided polygon shape. This hex stud is RoHS compliant, meaning it is free of lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBBs), and polybrominated diphenyl ethers (PBDEs). It is also suitable for use in various applications and is available in a variety of lengths and sizes.