Profile: Royal Coil, Inc. manufactures custom precision mechanical springs. We are an ISO 9001:2000 certified company. We offer compression, extension, torsion, four-slide, wire forms, strip forms, spring stampings, metal stampings, spring washers, retaining rings and snap rings including ferrous or non ferrous materials. We provide full service tool and tooling capabilities with four-slide, punch press & progressive die tooling. We offer extension springs in wire ranges from .008 to .209 diameters. Spring diameter, pitch, number of coils, and free length can be varied to accommodate the design requirements. We also offer four-slide, punch press, and tooling capability with wire ranges from .018 to .250 and strip ranges of thickness from .010 to .187 by 3.0" max.