3212-60037 is a threaded male SMPM smooth bore PCB munt connector. Gold over nickel plating is commonly used on Brass, BeCu and stainless steel bodies used in RF PCB Connectors. Its corrosion resistance and electrical connectivity make it an excellent choice for signal transmission and high reliability. However, when these connectors are soldered to PCBs (either by hand or through a reflow process), undesirable remnants of the gold plating can be found in the solder joint. Excess gold in a solder joint can create a gold-tin compound known as AuSn3. These gold striations in the solder joint are brittle - susceptible to breakage under mechanical stress (shock and vibration). Applications include military and aerospace radar transmit/receive units, space and high reliability communications and GPS, harsh environment applications (high vibration, extreme temp), embedded computing, any time de-golding is a concern or requirement.