Spring Dynamics - Almont, MI (Serving Northern Ohio)
Manufacturer, Custom Manufacturer
TS/ISO 16949 certified manufacturer of counterbalances, spiral, power, clock, extension, compression & torsion springs of all shapes & sizes & from most materials.  Several in-line finishing & secondary processes available.  Full service design & engineering available.
www.springdynamics.com/products

Dudek & Bock - Chicago, IL (Serving Northern Ohio)
Custom Manufacturer
Custom manufacturer of precision machined springs including compression springs in helical shape. Springs are available with open, squared and round ends. Compression springs are made from 0.005 in. to 0.5 in. round, square or rectangular wire with ferrous or non-ferrous composition. Compression springs can be designed with ground or unground ends. On-time delivery.
www.dudek-bock.com/springs.html

Universal Fabrication & Assembly - Cleveland, OH
Manufacturer, Custom Manufacturer, Service Company
ISO 9001:2008 certified custom manufacturer of simple helical compression springs. Compression springs are available in simple helical, conical, hour glass & barrel forms with constant & variable pitches. Compression springs are suitable for cell phone, torches & sensitive instrument applications. Materials include stainless steel, low & high carbon steel, beryllium copper, brass, chrome silicon, chrome vanadium, hard drawn carbon, nickel, phosphor bronze & tungsten. Capabilities include length up to 25 ft., 0.125 in. to 3.31 in. width, 0.010 in. to 0.093 in. thickness, 0.005 in. to 0.500 in. dia. & 0.005 in. to 0.312 in. wire size.
catalog.universalfabassembly.com/item/all-c...

Helical Springs Capabilities
	Spring Assemblies

Carlisle Springs & Specialty - Elyria, OH
Manufacturer, Custom Manufacturer
Manufacturer of custom wire springs. Design assistance available.

North Coast Spring & Wire Forms Co., Inc. - Cleveland, OH
Manufacturer, Custom Manufacturer, Service Company
Compression, Torsion, Extension, Agriculture & Automotive Springs, Vending Coils