Feb 10, 2022 · Screw sizes in diameters from #000[50UNM]to 3/8 in. [M10] and lengths from 1/16 in. to 12 in. Special secondary machining include cross drilled threads, drilled heads, drilled vent holes, broached and slabbed heads, ground shoulder and special thread lengths. Screws custom specification platings including zinc, phosphate and oil, cadmium and tin.