9" Press Screw. For making up veneer-press frames, case clamps or gluing jigs, this heavy-duty press screw is a sturdy, versatile jig. The 1-3/8" x 1-5/8" swivel head is removable for easy installation or change-over. The threaded nut drives into a 1" round hole and may be further secured with screws. The screw diameter is 11/16". Baked black enamel finish on malleable iron castings.