Profile: Monticello Spring Corp. manufactures cold-wound helical springs. We are certified to ISO TS16949 9001. Our products include compression springs, extension springs and torsion springs. We offer spring design with round, square & rectangular cross section wire, constant outside diameter, conical, hour glass & barrel shape, ground ends, closed ends and open ends. Our products are used in application such as hydraulic valves, fuel system injectors, pressure regulators, locks, compressor valves, engine regulators, overrunning & automotive clutches, golf cars, power tools, seals, home appliances, automotive and heavy truck transmissions.