Profile: Perma Mfg., Inc. manuafactures hitch pins and specialty pin products. Our services include contract machine, conventional and CNC machining services. We offer turning, chucking, milling, drilling, slotting, cross drilling, bending and forming. Our screw machine products include threaded and non-threaded fasteners, pins, shafts, bolts, screws, studs, tubes, bushings, collars, sleeves, spacers, washers and plugs.