Size 2" Max. Opening 2" Min. Opening 0" Depth 2" Screw Dia. 1/2" Test Load 3,500 Lbs. Weight Per Box 1-1/2 Lbs. Conforms to Federal Specification GGG-C-406D, Type 1, Class A, light service, deep throat. Spatter-resisting copper plated screw, swivel and crosspin for welding applications.