Size 2" Weight 1.31 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. Threads on our screws are Acme roll-threaded for maximum strength and clamping force.