3M™ Scotchlok™ Female Disconnect, Non-Insulated Butted Seam MU18-250DFK, 22-18 AWG, 1000/Case. 3M™ Scotchlok™ Standard Female Disconnect Terminal has dents and rolled edges to offer superior holding force while allowing for quick and easy disconnect. The terminal has a non-insulated, butted-seam barrel and withstands a maximum temperature of 347 degrees F (175 degrees C). Its durable brass construction offers good conductivity and a tin-plated finish resists corrosion.