Industrial Door Company D.B.A. Industrial Spring Co. and Holmes Manufacturing


Resources

Torsion springs

Stand behind every spring

Torsion springs

Quality control

The corporation was founded in 1974, and since then, Industrial Spring Company has manufactured the highest quality garage door springs. Today, our founder’s children, Jodi Boldenow and Jeremy Sizer, have stepped into the roles of second generation owners. ISC and HSM are leaders in residential and industrial spring manufacturing. We proudly stand behind every spring we manufacture and sell.

Browse Our Comprehensive Product Line That Includes:

  • Residential torsion spring assemblies including oil-tempered, black coated and galvanized spring wire
  • Wire diameters from .148” to .625” and ID’s from .050 to 10.5”
  • Custom, made to order springs for commercial and residential replacement
  • Square wire in diameters from .312 to .437
  • Specialty ends including “hook ends” for mini storage to “tail” for rolling steel
  • Mini-storage springs
  • Rolling steel springs
  • Custom stenciling-put you companies name on each spring!
  • Single, duplex and triplex assemblies
  • Hardware Line

Customer-Centered Services

  • Springulator our calculating software
  • Spring Wire Charts to assist you
  • SAME DAY SHIPPING available for replacement orders placed before 11a.m.
  • Just-in-time programs to reduce inventory levels and improve cash flow
  • Comprehensive stock inventory of extension and one-piece springs
  • Custom packing and pallet sizes to fit your requirements
  • Electronic ordering and invoicing
  • Attentive customer service
  • Media Kits

We hope you will find our product line to fit your needs, if you don't see what you are looking for?  Call us toll free at 800.427.1203 or 763.786.6527 and we will be happy to work with you and design the custom springs that work perfectly for you.