PEM® SMTPFLSM Reelfast® Panel fasteners come pre-assembled and supplied on tape and reel. This means that the panel fastener can be fitted in one operation with no offline secondary operations making it the fastest way to assemble panel fasteners to a PCB. SMTPFLSM fasteners are made from steel with hardened steel thread stud. The finish on the body is electroplated tin making it fully compatible with current solder systems and RoHS compliant. The stud is sprung loaded which means that the stud is always held fully retracted when not being used which reduces the possibility of damage to the PCB by the stud being dragged across its surface.