Used to ground P.C. boards to steel or aluminum chassis. Annular projecting teeth eliminate the need for serrated or starwashers to make good electrical contact with the circuit foil. Thread sizes #4, #6, and M3, M4.
• Metal Expo, Nov 10-13, 2020, Moscow, Russia
• wire & Tube Düsseldorf, Dec 7-11, 2020, Düsseldorf, Germany
• Manufacturing World Japan, Feb 3-5, 2021, Tokyo, Japan