Coil Springs

Helical springs, more commonly known as coil springs, are simple mechanical devices. A given spring will serve one of three primary functions: storage and subsequent release of energy, shock absorption, or maintenance of force between two contacting surfaces.

Created by coiling wire around a pre-shaped form, springs are available in one of three primary varieties:

• Tension, or extension, springs are designed to resist stretching. They generally have an eye or hook on each end and can often be found in use in industrial robotics.

• Compression springs, in contrast, are designed to resist compression — they are commonly used as shock absorbers in vehicles.

• Torsion springs are designed to resist twisting. They are found in a range of applications, from clothes pins to complex machinery.

Compression and tension springs resist forces along their helical axes; therefore, the shear modulus of the material used to make them is the primary factor for consideration. Torsion springs, on the other hand, experience torque forces around their helical axes, making the base material’s elastic modulus, or Young’s modulus, the more important property.

AFI Trusted Brands

To ensure that all of your spring requirements are met, the team at AFI worked hard to source only the most well-made springs available. We stock over 550 different springs, all of which are made by one of only three trusted brands.

Lee Spring

Lee Spring is an ISO 9001 registered and RoHS compliant manufacturer of specialty springs. Founded in 1918 by Robert Lee Johannsen in Brooklyn, NY, Lee Spring produces many of the tension, compression, and torsion springs we stock at AFI. Still headquartered in Brooklyn and with facilities across the United States, Mexico, China, Bangalore, and Germany, Lee Spring is a globally recognized brand today.

Century Spring Corp.

AFI stocks a large number of Century Spring products, particularly their compression springs and long length extension springs. Founded in 1927 and merged with MW Industries Inc. in 1997, Century Spring is among the top manufacturers of specialty fasteners and springs in the country.

Associated Spring

Currently a Barnes Group Inc. business, Associated Spring has been innovating spring design and manufacture since 1857. AFI is proud to stock springs, spring washers, and other specialty spring-related products from a company with the history and proven track record of Associated Spring.

Spring Solutions at AFI

Our team at AFI goes to great lengths to ensure that the products we stock are the best the industry has to offer. We hold prospective sources to strict standards so that our customers know that the products they buy from us are up to the task of holding their world together. We back up our careful product selection with unrivaled customer service and dedication to expedient delivery. We’ve done it this way for 30 years, and we’ll keep doing it this way to provide our customers with the best.

Contact us today to learn more about the high quality torsion, compression, and tension springs we stock.