The bayonet counterpart in round design (SW) is made of material number 2.0401.20, nickel-plated brass. The process connection is an M 12 x 1 thread with a screw-in length L1 of 10 mm. The counterpart is used for a 12 mm bayonet lock for installing plug-in resistance thermometers and thermocouples. The outer diameter is 12 mm and the inner diameter is 8.5 mm. The total length of the counterpart is 40 mm.