Torsion Springs

Assorted Torsion Springs
Assorted Torsion Springs

At Jackson Spring Mfg. Co. Inc., we manufacture premium quality custom torsion springs according to our IATF 16949:2016 & ISO 9001:2015 certified quality management system. Torsion springs are used to transmit a rotational force, or torque, or to store rotational energy in a static system. We produce torsion springs on CNC coiling equipment using tempered, hard drawn, or annealed wire between 0.010” and 0.192” in diameter. We have an in-house grinding department that adds to our manufacturing flexibility. Numerous configurations such as axial, tangential, and radial legs with any custom shaped ends can be manufactured, according to customer prints.

We work with ASTM and SAE grade carbon steel, stainless steel, alloy steel, and copper materials to ensure customers receive consistent, reliable parts that meet all applicable quality standards. Vision systems and load testing cells are used to verify dimensions and performance of springs according to customer specifications. For high volume production, many processes can be automated, allowing for lights out manufacturing. This can drastically reduce per piece costs and lead times for long production runs. Typical lead times average 3 to 4 weeks, with expedited production and JIT delivery services available on request. For additional information about our custom extension spring manufacturing capability, see the table below, or contact us directly.

Torsion Spring Highlights

Spring End Configurations
Spring Materials
Stainless Steel
Alloy Steel
Spring Material Grades
Carbon Steel:
  • ASTM A229 (Oil Tempered MB Grade)
  • SAE 1080 (Oil Tempered GB Grade)
  • ASTM A227 (Hard- Drawn MB grade)
  • ASTM A228 (Music Wire)
  • SAE 1074 (Blue Tempered or Annealed)
  • SAE 1064 (Blue Tempered or Annealed)
  • SAE 1070 (Blue Tempered or Annealed)
  • SAE 1095 (Blue Tempered)

Alloy Steel:

  • ASTM A231 (Chromium Vanadium)
  • ASTM A401 (Chromium Silicon)
  • ASTM A313 ( Stainless )
  • SAE 51414 (Stainless)
  • SAE 51420 (Stainless)
  • SAE 51431 (Stainless)


  • ASTM B 134 (Spring Base)
  • ASTM B 159 (Phosphor Bronze)
  • ASTM B 197 ((Beryllium copper)
Surface Treatment
Black Oxide
Cleaned & Oiled

Zinc Plating
CNC Machinery
Compression Spring Coiler
Mechanical Coiler
CNC Coiler
CNC Multi radical Formers
Additional Services
CAD Design
Color Coating
Vision System
Optical Comparison
Various Load Testing
Helix Direction
Wire diameter
Min: 0.010”
Max: 0.192”
Production Volume
Specialty Production Shop
Long Runs
High Volume
Typical Lead Time
3-4 Weeks Job to Job Basis
Rush Services Available
Emergency Services Available
JIT Deliveries

Additional Information

Industry Focus
Fluid Sealing
Fire Arms
Industry Standards
CASMI - Chicago Association of Spring Manufacturers, Inc.
SMI - Spring Manufacturers Institute
IATF 16949:2016 & ISO 9001:2015 - International Organization for Standardization

ITAR Registered

Lights Out Manufacturing
File Formats
IGES - Initial Graphics Exchange Specification, ANSI file format.
PDF - Portable Document Format
STEP - Standard for the Exchange of Product Model Data