What Vulcan Spring does

Vulcan Spring and Manufacturing Co., Inc. is a US-based custom spring manufacturer founded in 1967 and headquartered at 501 Schoolhouse Road, Telford, Pennsylvania. The company designs and manufactures precision-engineered flat steel and strip springs — including constant force (Conforce), constant torque (Contorque), power (Conpower), variable force, hinge, spiral torsion, Twin Spring, and Inconel (MRI-grade) configurations — alongside wire forms, mechanical reels, and a family of security tether products (PULLBOX, PULLBOX Pro, VS-1, MiniVS). All production is conducted in-house in the USA using custom tooling, with capacity described as "millions of springs produced annually," spanning rapid prototyping through high-volume production.

The company serves mission-critical applications across twelve industry verticals: aerospace & defense (AS9100D certified, supplying NASA programs including the James Webb Space Telescope sunshield, OSIRIS-REx, Mars Rover, and ISS), medical devices (surgical staplers, autoinjectors, robotic-assisted surgery, infusion systems, MRI machines), firearms, automotive interiors, retail display, fire dampers, electric motors, robotics & automation, railcar, industrial, trucking, and window shades. Vulcan Spring operates a sales-led, direct-to-engineer go-to-market model, reaching designers and product teams through industry trade shows (MD&M West, BIOMEDevice, SHOT Show, Design2Part Show, Shop! Market Place, Automotive Interiors Expo), virtual tradeshow booths, content marketing, downloadable technical resources, and a sample-kit e-commerce shop.

Revenue is generated primarily through one-time custom manufacturing orders priced via quote (30-day quote validity, net-30 payment terms for approved credit accounts), supplemented by sample-kit e-commerce sales and calibration services. The company operates as part of a "family of brands" that includes the wholly-owned Gardner Spring, Inc. subsidiary. Leadership transitioned in 2022 with the promotion of Bill Krauss to President, and the company achieved AS9100D certification in November 2023 to formalize aerospace and defense supply-chain eligibility.

Name

Vulcan Spring

Legal name

Vulcan Spring and Manufacturing Co., Inc.

Website

https://vulcanspring.com

Company type

Private

Founded year

1967

Operating status

Operating

Headcount range

51–100 employees

Short description

Vulcan Spring and Manufacturing is a US-based custom spring manufacturer founded in 1967, producing precision flat steel and strip springs for aerospace, medical device, automotive, firearms, and retail display industries.

Ownership category

akta.pro rank

Headquarters

HQ city

Telford

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Operations, Supply Chain, Technology or R&D, Marketing or Sales

Revenue model

1. Custom Spring Manufacturing: Vulcan Spring generates revenue through the design, engineering, and manufacturing of custom flat steel springs and strip springs. Orders are billed at prices in effect at time of shipment, with catalog products priced per website and non-catalog/custom products priced based on quotes. The company produces millions of springs annually for diverse industries.
2. Sample Kit Sales: Direct-to-consumer e-commerce sales of sample kits through the company website shop, allowing customers to evaluate spring types before placing custom orders.
3. Calibration Services: The company offers calibration services for products, warranted for one year from completion against defects in workmanship or materials.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels7 records

Core offering

Vulcan Spring designs, engineers, and manufactures custom flat steel springs and strip springs — including constant force, constant torque, power, variable force, hinge, spiral torsion, and wire form springs — entirely in-house in the USA with custom tooling capabilities. The company produces millions of springs per year serving aerospace & defense, medical devices, firearms, automotive, retail display, and other industrial customers from prototyping through high-volume production. Complementary branded product lines include the PULLBOX, Pullbox Pro, VS-1, and MiniVS security tether systems for retail point-of-purchase and theft-deterrence applications.

Product overview

Vulcan Spring is a custom spring manufacturer offering precision-engineered flat steel and round wire springs for diverse industrial applications. The product portfolio centers on specialized spring types including Conforce (constant force), Contorque (constant torque), Conpower (power), Variable Force, Hinge, Spiral Torsion, Twin Spring, and Mechanical Reels, complemented by security tether solutions (Pullbox, Pullbox Pro, VS-1, MiniVS), Plastic Scrolls, Wire Forms, and traditional Compression/Extension/Torsion springs. The company provides these products across multiple industry verticals including Aerospace & Defense, Medical Devices, Automotive, Retail Displays, Firearms, Fire Dampers, and Window Shades. Sample kits are available for product evaluation. All springs are manufactured in-house in the USA with capabilities for rapid prototyping through high-volume production.

Differentiator

Problem solved

Functional benefit

Brands

• Conforce Spring: Trademarked constant force spring product line providing high force output with small space requirements
• Conpower Spring
• Contorque Spring
• PULLBOX
• MiniVS

Products and services

• Conforce Spring Proprietary constant force flat steel spring providing high force output with minimal space requirements, long linear reach with minimal force buildup, and indefinite power storage when extended; defies Hooke's Law to deliver constant force over travel length. Used for counterbalancing, pushing/pulling objects, and linear extension force applications in aerospace, medical, firearms, and retail display systems.
• Conpower Spring Power spring offering smooth winding and retracting capability with flatter torque gradient than conventional power springs. Used for seat belt retractors, window shades, retractable charges, and other rotational torque applications.
• Contorque Spring Constant torque strip spring wound onto an output spool to provide consistent rotational torque with a flat torque curve. Designed for motor applications, cable mechanisms, and refueling cable reels.
• Compression, Extension, & Torsion Springs Traditional round wire springs in compression, extension, and torsion configurations engineered for diverse industrial applications and custom force/lifecycle requirements.
• Hinge Spring Spring designed for aerospace hinge mechanisms including satellites, solar panels, antennas, and spacecraft deployment systems, providing reliable hinge action under demanding environmental conditions.
• Mechanical Reel Consistent counterbalancing power device used for medical carts and applications requiring cord management with smooth retraction and repeatable force delivery.
• MiniVS Compact security tether offering up to 36 inches of nylon-covered steel cable in a small form factor, designed for light-duty in-store displays and point-of-purchase theft deterrence.
• Motor Brush Spring Spring engineered for electric motor applications providing consistent contact pressure for motor brushes and continuous-operation reliability.
• Plastic Scrolls Self-coiling plastic strips wound around a central spindle for manual pricing and messaging adjustments. Used in vending machines, tobacco displays, and signage displays.
• Pullbox Constant pull cable retractor for product positioning and theft deterrence, featuring up to 5 feet of cable with 2 pounds of force and available in Side, End, Center Exit, and Top Exit formats.
• Pullbox Pro Enhanced security tether with ratcheting mechanism for extended cable support, offering up to 5 feet of cable with 1 pound of force, designed for consumer interaction applications in retail environments.
• Spiral Torsion Spring Flat steel torsion spring with symmetrically spaced coils delivering torque in applications requiring less than 360 degrees of rotation. Used in fire dampers, medical devices, automotive, and architectural hardware.
• Truck Door Counterbalance Spring solution for truck door applications providing counterbalancing force for easy door operation in commercial trucking fleets.
• Twin Spring Compact yet powerful dual-spring configuration ideal for applications requiring precise force in limited space, such as surgical staplers and other miniaturized medical device assemblies.
• Variable Force Spring Spring providing varying force throughout the motion cycle. Gradient positive design demands stronger force as extended; gradient negative design delivers weaker force as extended. Used in pusher trays for retail displays to keep products forward-facing and for counterbalancing applications.
• VS-1 Compact security tether solution for product positioning, mountable inside or outside displays for seamless point-of-purchase presentation.
• Wire Forms Custom-configured wire form springs used across fire dampers, aerospace, medical devices, and automotive applications, suitable for mid- to mass-production volumes.
• Sample Kit Sample kit of Vulcan Spring products sold through the company e-commerce shop, allowing customers to physically evaluate spring types and applications before placing custom manufacturing orders.
• PULLBOX Sample Kit Sample kit featuring PULLBOX security tether products sold through the company e-commerce shop, enabling retail display designers to evaluate the security tether line before ordering units for production deployments.

Quantifiable outcome

• Millions of springs produced annually demonstrating high-volume manufacturing scale
• +1 more outcomes

Named customers6 records

Segments12 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature7 records

Partnerships

Two partnerships are on record, tiered minor.

• Team 1218 (SCH Vulcan Robotics)minorOthersVulcan Spring sponsors Team 1218 (SCH Vulcan Robotics) in the FIRST Robotics Competition, an organization that celebrates science, technology, engineering, and math (STEM) skills among youth. The team competed at the Cobo Center and Ford Field in Detroit, Michigan. Vulcan Spring views this as investing in the next generation of engineers and scientists.
• Gardner Spring, Inc.minorOthersGardner Spring, Inc. is part of the Vulcan Spring family of brands. Vulcan Spring & Mfg. Co. and Gardner Spring collectively operate the Sites and share privacy policies. Gardner Spring has its own website at gardnerspring.com.

Scale indicators4 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Lee Spring: One of the largest North American catalog and custom spring manufacturers, offering compression, extension, torsion, and specialty springs across industrial, medical, and aerospace customers. Directly comparable in custom flat/strip spring manufacturing and similar go-to-market across multiple verticals.
• Century Spring: Catalog and custom spring manufacturer offering compression, extension, torsion, and flat springs to industrial and OEM customers. Comparable in custom-engineered spring production serving similar mid-market industrial and OEM applications.
• Gardner Spring: Wholly-owned brand in the Vulcan Spring family, focused on spring manufacturing and distribution. Direct sister brand with overlapping custom spring capabilities and shared back-office infrastructure.
• Smalley Steel Ring: Manufacturer specializing in flat wire coiled springs, retaining rings, and constant-section wave springs for aerospace, medical, and industrial applications. Closely comparable in flat wire/strip spring technology and similar high-precision end-markets.
• Boker's Inc. Custom manufacturer of precision stampings, flat washers, and spring washers serving aerospace, medical, and industrial OEMs. Comparable in flat-metal custom components for similar regulated end-markets.
• Bal Seal Engineering: Manufacturer of precision springs (including canted coil springs), seals, and conductive contacts for medical devices, aerospace, and industrial applications. Comparable in specialty engineered spring solutions for mission-critical OEM customers.
• Murphy & Read Spring Manufacturing: US custom spring manufacturer producing precision compression, extension, torsion, and flat springs for industrial, aerospace, and OEM customers. Comparable in custom-engineered spring production for similar mid-market industrial applications.

Broad incumbents

• Associated Spring (Barnes Group): Barnes Group's spring and engineered components division, a major Tier-1 supplier of precision springs and stampings to aerospace, automotive, and industrial customers globally. Comparable in custom engineered springs but materially larger scale and broader product portfolio.
• Spirol International: Global manufacturer of engineered fasteners, coiled pins, and spring components serving aerospace, automotive, and industrial OEMs. Comparable in custom-engineered spring/fastener components but with a broader hardware portfolio.

Regional players

• TFC Industries: UK-based spring manufacturer serving European industrial, automotive, and aerospace customers with custom compression, torsion, and flat springs. Comparable in custom spring offerings but primarily serves UK/European geographies rather than North America.

Market position

Strengths4 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• Xx.com/VulcanSpring

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Vulcan Spring