Precision Electrical Co.The M3X20+6 is a single-ended hex stud manufactured by Shuntian Precision Electrical Co. This part has a 3mm diameter and is 20mm long, plus a 6mm shoulder. This part is compliant with RoHS regulations and is designed for use in electronic components such as motors, switches, and other electrical assemblies. It is made of metal and is resistant to corrosion, oxidation, and other environmental hazards. It is also easy to install and remove from its mounting surface.