CapabilitesCustom SpringsCustom Wire FormsMetal & Fourslide StampingCustom Antennas & AssembliesPortfoliosFour Slide Stamping for
the Dental Industry
Coiled Generator Spring
for the Camping Industry
Wire Formed Antenna for
the Communication Industry
Double Torsion Spring
for the Safety Containment
Industry
Power Spring for the Food
Preparation Industry
Assembled Extension
Spring for the Automotive
Industry

Custom Springs

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Sterling Spring, LLC is dedicated to becoming the spring supplier of choice through our customer-focused approach to product quality, open communication, technical service and on-time delivery. Through Sterling's commitment to our employees and investment in the latest spring manufacturing technology, we have expanded our capabilities beyond the typical compression, extension and torsion spring product mix. We think outside of the box and get excited to work on unique designs that are outside of the industry standard.

Compression springs lay at the foundation of Sterling Spring's history and with the introduction of CNC technology we have been able to reduce our setup times, improve our ability to meet tight tolerances and increase the versatility of spring shapes and sizes made directly off our machinery. We have the ability to make cylindrical, conical, barrel and magazine compression springs that can be manufactured with closed or open ends with our in-house grinding department prepared to meet all of your spring- end grinding needs. We are equipped to run wire sizes ranging from .003" to over a half an inch in diameter with outside diameter production capabilities that exceed five inches and have no boundaries on the length of your spring.

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Custom Springs

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Sterling Spring's extension spring manufacturing equipment has been through a major expansion to increase the range of wire and spring sizes available for our customers. Our automated looping machinery has vastly improved our efficiency which has helped reduce lead times to maintain competitive pricing. We provide extension springs with machine, crossover or swivel hooks, loops or custom ends that can be extended, reduced, half, double, side or enlarged.

Our customer's options for custom torsion springs are endless with the quality and quantity of open-faced CNC equipment available within our facilities. Sterling's machinists and top-of-the-line equipment can handle the most difficult of torsion and double torsion spring designs. In addition, Sterling Spring can make leaf, garter, power, wave and constant force springs. We are always up for a challenge!

We make springs out of round, square or rectangular wire and can be manufactured with a wide range of spring tempered materials, such as stainless steel, music wire, hard drawn, oil tempered, chrome silicon as well as exotic metals and specialty materials. All of the raw materials purchased by Sterling Spring are certified by our suppliers to the ASTM, AMS or DIN standards required on your print. We purchase RoHS compliant material and DFARS material can be made available upon request.

We work extensively with approved suppliers that can complete your parts with the plating or finish of your choice. From zinc plating to black oxide to Teflon coating, Sterling has a large network of suppliers that provide high quality and timely finishes at an economic price that will be included in your quoted price. Sterling will expedite the service required and will obtain plating certifications based on your print specs for each lot of material sent out of our shop.

As an ISO 9001:2008 and TS 16949:2009 certified company, we take quality seriously, and employ numerous quality measures to ensure your print specifications are attained. Our manufacturing processes meet SAE standards and we are a member of the Chicago Area Spring Manufacturers Institute (CASMI).

To learn more about all of our custom spring fabrication capabilities and industries served, see the table below or contact us directly.

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Custom Springs - Capabilities

Type of Spring
Torsion
Compression
Extension
Double Torsion
Magazine
Barrel
Conical
Leaf
Wave Washers
Constant Force
Power
Garter
Form
Flat Strip Form
Wire Form
Round Wire
Square Wire
Rectangular Wire
Elliptical Wire
Spring End Types
Closed End Ground
Closed End Unground
Double Torsion
Hinge
Open End Ground
Open End Unground
Reduced
Short Hook
Straight Offset
Straight Torsion
Squared
Tight Index Coils
Straight Legs
Bent Legs
Eyelet
Loops
Hooks
Extended
Half
Crossover
Machine
Flat Ends
Chamfered
Deburred
Special
Custom
Direction of Helix Left
Right
Spring Materials
Music Wire
Stainless Steel (302, 304, 304V, 316, 17-7)
High Carbon Missile Wire
Square Wire
Tungsten
Titanium
Aluminum
Brass
Copper
Several Exotic Materials
Hard Drawn
Oil Tempered
Chrome Silicon
Chrome Vanadium
Valve Quality Materials
Eligiloy
Hastelloy
Inconel
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)
Copper:
  • ASTM B 134 (Spring Base)
  • ASTM B 159 (Phosphor Bronze)
  • ASTM B 197 ((Beryllium copper)
Finishes
Cleaned & Oiled
Post Plating
  • Chrome
  • Nickel
  • Gold
  • Tin
  • Zinc
Pre-Plated Copper Material
Black Oxide
Phosphate
Powder Coated
Shot Peened
Teflon
E-Coat
Passivated
Paint
Tumble
Deburr
Electro-Polish
Washed
Part Diameter OD Up to 5.5 in
Wire diameter .003 to .5 in
Tolerance (+/-) Tight Tolerances
+/- .003 in (Diameters)
Equipment
Automated Grinder
High Speed Coiling Machines
Open Faced Machines
Paint Line
Shot Peener
Tumbler
Chamfering Tools
Additional Services
Screw Machining
Anodizing
Assembly
Chamfering
Electro-polishing
Grinding
Heat Treating
Riveting
Painting
Passivating
Powder Coating
Shot Peening
Stress Relieving
Swaging
Tapping
Welding
E Coating
Tumbling
Production Volume 1 to 20,000,000 units
Typical Lead Time 3 to 4 weeks
Rush Services Available

Additional Information

Industry Focus
Brake
Antenna
Outdoor Gear
Food Processing
Dental
Medical
Trucking
Window
Vacuum Cleaner
Automotive
Communication
Appliances
Entertainment
Gaming
Military
Farming
Electronics
Trampoline
Aerospace
Welding
Railroad
Construction
Sports Equipment
Hardware
Lighting
Intended Application
Door Hinges
Handles
Switches
Brake Springs
Antenna Coils
Instruments
Garage Doors
Hardware
Machinery
Measuring equipment
Pumps
Valves
Cars
Trucks
Aircrafts
Push-Pull Controls
Multi-Purpose Springs
Vending Machines
Appliances
Fire Arms
Ladders
Vacuums
Furniture
Recliners
Lighting Fixtures
Industry Standards
TS 16949
ISO 9001:2008
ASTM
SAE
Chicago Area Spring Manufacturers Institute (CASMI)
File Formats AutoCAD
PDF
Images

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