The Hirschmann Test & Measurement socket having pole terminal with captive insulated head, which is held under constant pressure against the insulated rings by a spring. It comes with 4 mm diameter nickel plated, brass threaded bolt with 2 mm diameter transverse hole. It is used for non rotating installation in switch panels and equipment chassis with wall thickness up to 3.5 mm. M4 thread
Temperature range -25 °C to +100 °C