Master Spring & Wire Form
Master Spring is a manufacturer of wire forms and custom springs, including compression springs, extension springs and torsion springs.
http://www.masterspring.com/

Ace Wire Spring and Form Co.
Ace Wire leading spring and form manufacturer of compression springs, extension springs, torsion springs, wire forms. Ace Wire has 67 years of experience.
http://www.acewirespring.com

Dayon Mfg., Inc.
Manufacturer of custom miniature springs, sub-miniature compression, extension, as well as standard sizes with wire diameters of .0028 to .125 inches. Dayon can provide Miniature Springs, Compression Springs, Extension Springs, Torsion Springs, Wire Forms, as well as expert Engineering Assistance
http://www.dayonmfg.com/

Kirk-Habicht Company
Spring Manufacturer - compression springs, extension springs, torsion springs, springs.
http://www.kirk-habicht.com

A.V. Weber Company Inc
A.V. Weber in North Wale, PA manufactures springs, wireforms and stampings for industrial, aerospace, medical, pharamaceutical and specialty components.
http://www.avweber.com/

Diamond Wire Spring Company
Manufacturers of compression, extension, torsion, die springs and wire forming. Online catalog with stock springs.
http://www.diamondwire.com/

Hangzhou Xingfa Spring Co. Ltd
Manufacturer of brake valve springs, auto suspension springs, hot roll springs, wire, spiral, wavy, trampoline, valve, hoisting jack, clutch, bracket and motorcycle shock absorber springs.
http://www.xfspring.com

Navarro Spring Company
Maker of custom springs and wire forms specializing in compression, extension, torsion and garter springs and wire forms.
http://www.navarrospring.com

Technische Veren Twente bv
Technische veren BV
http://www.veren.nl

North Coast Spring and Stamping Co.
A minority manufacturer of compression springs, extension springs, torsion springs, stampings and wire forms. Distributor of bearings, castings, forgings and roller chain.
http://www.northcoastspring.com