CPC cable clamp kits provide excellent strain relief and can used on all series of CPC receptacles and plugs. This CPC clamp kit (EDMO #206138-8) features a straight, #23 shell size, fits cables with a diameter of 17.86 mm, has a 1-3/8-18 UNEF-2B thread size, and 0.500 inch screw length.plastic Cable Clamp Material