Tight tolerances. Fast turnaround.
Built for manufacturers who can’t afford to wait.
Every spring we manufacture is made to your exact specifications. No off-the-shelf compromises — only precision-engineered components built for your application.
Helical coil springs that resist compressive forces. Available in a wide range of wire diameters, outer diameters, and materials including carbon steel, stainless steel, and specialty alloys.
Tightly coiled springs designed to absorb and store energy by resisting pulling apart. Available with a variety of hook end configurations for reliable attachment in assemblies.
Springs that exert a torque or rotary force along their axis. Ideal for applications requiring rotational force such as door hinges, automotive mechanisms, and industrial equipment.
Convex (barrel) shaped springs with reduced solid height and lateral stability. Commonly used in applications where conventional cylindrical springs may buckle.
Custom-bent wire components formed into precise shapes for clips, brackets, retaining rings, and complex 3D configurations. Produced from a broad range of wire diameters and alloys.
Engineering consultation services to design springs from scratch based on load requirements, space constraints, and operating environments. From prototype to full production runs.
Don't see exactly what you need? We manufacture any custom spring configuration — contact our engineering team.
Request a Free Same-Day QuoteWhen your application demands precision, reliability, and speed, Minuteman Spring delivers. As an ISO 9001:2015 certified manufacturer, we combine modern CNC coiling and wire forming technology with nearly 80 years of hands-on metallurgical expertise — all from our manufacturing facility in Millbury, Massachusetts.
Whether you need a prototype run of 10 pieces or a production order in the thousands, we apply the same rigorous standards to every job. Our customers — from aerospace engineers to OEM procurement teams — return to us because we consistently deliver on time, on spec, and within budget.
As a true jobber spring shop, we manufacture only to order. Every compression spring, extension spring, torsion spring, barrel spring, and wire form is custom-made for your application — never pulled from a shelf.
Minuteman Spring is ISO 9001:2015 certified — our quality management system is independently audited and verified. Every spring is manufactured to exact specifications with rigorous in-process and final inspection.
Fast response is critical in manufacturing. Submit your spring specifications and our engineering team responds with a detailed quote the same business day — keeping your project on schedule.
Nearly 80 years of continuous operation have built an expansive proprietary tooling library. This means faster lead times, more flexibility, and more competitive pricing on every order.
Our experienced team works alongside yours — from initial spring design consultation through full production. We bring deep metallurgical expertise and CNC coiling precision to every project.
Rooted in Millbury, Massachusetts and serving all of New England, we also supply custom springs to manufacturers across the United States and internationally with consistent quality and delivery.
Since 1946, Minuteman Spring Company has built its reputation on exceptional delivery performance, uncompromising quality, and a superior customer experience that keeps manufacturers coming back.
Use our free spring engineering calculators to estimate spring rate, load, stress, and geometry for your application. Results update in real time as you adjust parameters.
Need a production-ready quote based on your results?
Request a QuoteCalculate spring rate, solid height, max load, and stress for helical compression springs.
Enter the spring geometry and material below. Results calculate automatically. All dimensions in inches, forces in pounds (lb).
Spring index is within optimal range (4–12). This design is manufacturable with standard tooling.
Engineering Disclaimer: These calculations are provided as a general design guide based on standard spring engineering formulas. Results are approximate and do not account for all real-world factors such as fatigue life, temperature effects, or surface conditions. Always consult a qualified engineer before finalizing a design for production.
Our custom compression springs, extension springs, torsion springs, barrel springs, and wire forms are trusted across demanding industries that require precision, reliability, and consistent quality from their spring manufacturer — from Millbury, Massachusetts to worldwide.
Precision custom springs for flight-critical and defense applications with strict material traceability and documentation. Compression springs, extension springs, and wire forms built to aerospace standards.
Biocompatible custom wire forms and springs for surgical devices, diagnostic equipment, and implantables. Stainless steel and specialty alloy options available for medical-grade applications.
High-cycle custom compression and torsion springs engineered to withstand demanding automotive operating environments, vibration, and temperature extremes.
Heavy-duty compression springs, torsion springs, and barrel springs for machinery, presses, and industrial automation. Custom-engineered for load, cycle, and dimensional requirements.
Small-diameter precision springs and wire forms for switches, connectors, battery contacts, and electronic assemblies. Music wire and beryllium copper options available.
Custom springs for valves, actuators, and control systems in power generation and energy infrastructure. Oil tempered and chrome silicon materials available for high-temperature environments.
Don't see your industry? We manufacture custom springs for virtually any application.Our engineering team will work with your specifications directly.
ISO 9001:2015 Certified
Independently audited quality management system — every spring we ship meets the world's highest manufacturing standard.
Minuteman Spring Company, Inc. has been manufacturing precision custom springs from our facility in Millbury, Massachusetts since 1946. As one of New England's most experienced custom spring manufacturers, we have grown from a regional supplier into a trusted partner for manufacturers across the United States and worldwide.
We specialize in compression springs, extension springs, torsion springs, barrel springs, and custom wire forms — every one made to your exact specifications with no off-the-shelf compromises. Our business is built on three foundational commitments: exceptional delivery performance, uncompromising quality, and a superior customer experience. We combine modern CNC coiling and forming technology with nearly 80 years of accumulated tooling knowledge and metallurgical expertise.
From prototype to full production runs, our engineering team works alongside yours at every stage. We are not a faceless catalog supplier — we are your dedicated partner in custom spring design and precision manufacturing. We serve industries including aerospace and defense, medical and life sciences, automotive, industrial equipment, and electronics — domestically and internationally.
Everything you need to know about our custom spring manufacturing capabilities, materials, lead times, and quoting process. Can't find your answer? Contact our team.
We manufacture compression springs, extension springs, torsion springs, double torsion springs, barrel springs, conical springs, wire forms, and custom engineered spring assemblies. Every spring is produced to your exact specifications from a wide range of wire diameters (.008–.312") and alloy materials. We are a custom-only shop — we do not sell stock springs.
We manufacture custom springs from carbon steel, stainless steel (302, 304, 316, 17-7 PH), music wire, hard drawn wire, chrome silicon, chrome vanadium, oil tempered wire, phosphor bronze, beryllium copper, and other specialty alloys. Wire forms are available in diameters from .008–.625". Our engineering team will help select the optimal material for your application, operating environment, and load requirements.
Minuteman Spring offers same-day quoting on all custom spring orders. Submit your specifications online or call 508-299-6100 and our engineering team will respond the same business day. Most orders ship within 10 business days. We understand that fast turnaround is critical in manufacturing environments.
We supply precision custom springs to aerospace & defense, medical & life sciences, automotive & transportation, industrial equipment manufacturing, electronics & technology, and energy & power industries. Our springs are trusted in flight-critical, surgical, high-cycle, and high-temperature applications — serving customers throughout New England, the United States, and worldwide.
Yes. We accommodate everything from small prototype runs of 10 pieces to large production orders in the thousands. As a jobber spring shop, we apply the same rigorous quality standards to every order regardless of quantity. Our extensive tooling library allows us to move quickly from prototype to full production without costly re-tooling delays.
A jobber spring shop manufactures springs exclusively to customer order — we never carry inventory of stock springs. Every compression spring, extension spring, torsion spring, and wire form we produce is engineered and manufactured specifically for your application. This means better fit, better performance, and no compromises from off-the-shelf sizing.
Minuteman Spring Company is located at 34 Howe Ave, Millbury, MA 01527, in central Massachusetts. We are a New England spring manufacturer serving customers throughout Massachusetts, Connecticut, Rhode Island, New Hampshire, Vermont, Maine, and across the United States. We also ship internationally and serve customers worldwide.
Minuteman Spring Company, Inc. was founded in 1946 and has nearly 80 years of experience in precision custom spring manufacturing — making us one of the most established and experienced spring manufacturers in New England and the United States.
Have a question not answered here? Our engineering team is ready to help.
Tell us about your project. Our engineering team will review your spring requirements and respond with a competitive quote — often the same business day. All spring types, all materials, any quantity.
Fill in the form with your spring type, dimensions, material, and quantity requirements. Drawings or sketches welcome.
Our spring engineering team evaluates your requirements, selects optimal materials, and prepares your itemized quote.
Get a competitive, detailed quote — typically the same business day. Most orders ship within 10 business days.
