Custom Designed Compression Springs

Leveraging our 100-plus years of experience, the spring specialists at Hardware Products Company are capable of forming any type of spring imaginable, from miniature to gargantuan, including complex configurations.

A compression spring accepts a load and “compresses” as the load is applied. It returns to its free length when the load is removed. Compression springs are most commonly used in a vast variety of machinery from simple mowers to advanced spacecraft. All designs are verified by Spring Manufacturing Institute (SMI) software.


You have access to all our expertise at forming springs of any dimension and complexity, ultimately giving you control of your custom-design compression spring needs. We will assist you in the design of the compression springs to meet your unique specification. It’s as simple as sending us your application. From there, we enter your parameters into our official SMI spring design program, and follow-up with you, providing our precision recommendation. You are in control of final adjustments and approvals.

Hardware Products’ Processes Working for You

  • Constant Pitch for Constant Change
  • Variable Pitch for Variable Rate
  • Cylindrical, Conical and Barrel Shaped
  • Computerized Testing
  • SPC Printouts
  • Downfeed grinding for precise specifications on small runs
  • SMI software for design verification
  • Closed and ground ends to tighter tolerances where needed
  • Squareness Under Load
  • Tension Ends
  • Plating Available 

Compression Springs Specifications 

Free Length: infinite possibilities
Diameter: 1/16” to 18.00”
Wire Diameter: 0.005″ to 2.00″
Direction of Helix: LH or RH
End Configuration: Open as cut, Closed only, Closed and Ground, Open and Ground

Materials: Over 35 Alloys, (including: Music Wire, Oil Tempered Wire, Stainless Steel, Chrome Silicon, Chrome Vanadium, Elgiloy® Hastelloy®, Inconel®, Monel®, Red Metals).

Typical Compression Spring Applications

  • Belting & Hoses
  • Communications Equipment
  • Construction machinery
  • Electric Lighting & Wiring
  • Electronic Components
  • Fabricated Metal Products
  • Hand Tools
  • Heating Equipment
  • Industrial Machinery
  • Machinery
  • Measuring & Controlling Devices
  • Medical Instruments & Supplies
  • Metal Stampings & Forgings
  • Metalworking Machinery
  • Motor Vehicles
  • Plumbing Equipment
  • Search & Navigation Equipment
  • Transportation Equipment
  • Valve & Pipe Fittings
  • Lamp Manufacturers Electric
  • Compressor Manufacturers, Air & Gas
  • Environmental Control Manufacturers
  • Welding Apparatus
  • Mills, Drawing & Insulating
  • Industrial Machine Equipment Dealers
  • Industrial Supply Wholesale
  • Switchgear & Switchboard Apparatus
  • Steel Spring Manufacturers

We’re ready to make your custom-designed compression springs. Let our spring specialists put their years of experience to work for you. Contact us—and talk to a real person who will help you with your next custom-designed job.