What Associated Metal Forming Technologies does

Associated Metal Forming Technologies (AMFT) is a privately held, vertically integrated precision metal forming platform headquartered in East Lansing, Michigan, controlled by private equity sponsor One Equity Partners. The company designs, engineers, and manufactures custom precision metal components — including springs, stampings, fineblanked parts, deep-drawn components, wire forms, assemblies, and precious metal contacts — for OEM and Tier 1 supplier customers in nine end markets: aerospace, construction and agriculture, consumer goods, defense, digital infrastructure, electronics, energy and power generation, medical devices and equipment, and transportation. Core manufacturing processes span stamping (including proprietary micro-stamping), fineblanking (160–700 tons, tolerances within 0.001 inch), deep drawing, multi-slide/four-slide forming, micro-coiling (wire diameters from 0.001 to 0.007 inch), wire and flat coiling, contact riveting, heat treating, finishing and superfinishing, CNC and laser cutting, and assembly. AMFT operates through six heritage brands — Associated Spring (1857), Hänggi (1945), E. Winkemann (1938), Sko-Die (1947), AH Metal Solutions (1975), and P&B Metal Components (1961) — with manufacturing facilities across the United States, Brazil, Mexico, the United Kingdom, Germany, Switzerland, Denmark, Singapore, Malaysia, and Thailand, holding AS9100, IATF 16949, ISO 13485, ISO 14001, ISO 9001, TISAX, and ITAR/DFARS qualifications with CMMC 2.0 certification in progress.

The company generates revenue on a custom-engineered, quote-based model with multi-year supply contracts, selling directly through an enterprise field sales organization led by an SVP Chief Commercial Officer. Pricing is project-specific, reflecting complexity, volume, materials, and specification requirements rather than published list pricing. AMFT's go-to-market emphasizes early-stage collaborative engineering with OEM R&D teams, supported by in-house prototyping, DFM reviews, simulation, and tooling design, intended to embed the company into customer product lifecycles from concept through high-volume production. Differentiators cited by the company include vertically integrated capabilities from engineering and tooling through finishing and assembly, multi-site supply chain redundancy across three continents for mission-critical applications, and a qualification stack that meets the highest global standards for safety-critical aerospace, defense, medical, and automotive components.

Name

Associated Metal Forming Technologies

Legal name

Associated Spring US LLC

Website

https://amft.com

Company type

Private

Founded year

1857

Operating status

Operating

Headcount range

1,001–5,000 employees

Short description

Associated Metal Forming Technologies (AMFT) is a private, PE-backed precision metal forming platform uniting six heritage brands to design and manufacture custom springs, stampings, fineblanked parts, deep-drawn components, and assemblies for aerospace, defense, medical, transportation, electronics, and power generation OEMs and Tier 1 suppliers across 11+ countries.

Ownership category

akta.pro rank

Product category

Precision Metal Forming and Component Manufacturing

NAICS

Other Fabricated Metal Product Manufacturing (3329), Hardware Manufacturing (332510), Machine Shops (33271)

SIC

Aircraft & Parts (3720), Miscellaneous Fabricated Metal Products (3490)

akta.pro primary industry

Metal Airframe Structures & Machined Parts (IMABAEAC)

akta.pro secondary industry

Electronics & Electrical (Connectors, Housings, Tooling/Fixtures as End-Use) (Production AM Parts) (IMAAAEAF)

Keywords

• Precision metal stamping
• Fineblanking components
• Custom springs manufacturing
• Deep drawn metal parts
• Aerospace metal forming

Headquarters

HQ city

East Lansing

HQ country

United States

HQ region

North America

Offices12 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Precision Metal Component Manufacturing: AMFT generates revenue through the design, engineering, and manufacture of custom precision metal forming components including springs, stampings, fineblanked parts, deep-drawn components, and assemblies. Revenue comes from long-term OEM and Tier 1 supplier relationships across aerospace, defense, medical, transportation, and industrial applications. The company operates on a project-based manufacturing model with custom-engineered solutions.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels5 records

Core offering

AMFT designs, engineers, and manufactures custom precision metal components—including springs, stampings, fineblanked parts, deep-drawn components, multi-slide and micro-formed parts, electromechanical precious metal contacts, and assemblies—for mission-critical applications in aerospace, defense, medical, transportation, and industrial markets. The company operates a vertically integrated platform combining six heritage brands with capabilities spanning stamping, fineblanking, coiling, deep drawing, multi-slide forming, finishing, heat treating, tooling design, and assembly. Long-term OEM and Tier 1 supplier relationships are supported globally through manufacturing operations in eleven countries.

Product overview

AMFT is a vertically integrated precision engineering and manufacturing platform formed by uniting six legacy brands: Associated Spring, Hänggi, AH Metal Solutions, E. Winkemann, Sko-Die, and P&B Metal Components. The platform combines more than 300 years of engineering expertise in custom-built precision metal components. The portfolio is organized around core sub-brands serving distinct markets — Associated Spring (precision springs and stampings since 1857), Hänggi (Swiss micro-stamping and fineblanking), AH Metal Solutions (micro-manufacturing for medical/electronics), E. Winkemann (European precision stamped components), Sko-Die (heavy gauge stamping and electrical laminations), and P&B Metal Components (precious and base metal contacts for electrification) — supported by a unified suite of manufacturing capabilities including assembly, CNC machining, contact riveting, deep drawing, engineering and design, fineblanking, finishing processes, flat coiling, heat treating, laser cutting, micro-coiling, multi-slide forming, stamping, tooling design and fabrication, welding, and wire coiling. AMFT serves nine end markets: aerospace, construction and agriculture, consumer goods, defense, digital infrastructure, electronics, energy and power generation, medical devices and equipment, and transportation.

Differentiator

Problem solved

Functional benefit

Brands

• Associated Spring: The origin and cornerstone of AMFT since 1857, designing and manufacturing precision springs, washers, stampings, and engineered metal components for aerospace, defense, transportation, medical, power generation, and consumer products
• Hänggi
• AH Metal Solutions
• E. Winkemann
• Sko-Die
• P&B Metal Components

Products and services

• Associated Spring Cornerstone brand of AMFT since 1857, designing and manufacturing precision springs, washers, stampings, and engineered metal components for aerospace, defense, transportation, medical, power generation, and consumer products, with capabilities including micro-coiling and multi-slide forming.
• Hänggi Swiss precision engineering brand founded in 1945 and based in Bettlach, Switzerland, specializing in high-precision metal forming including progressive and micro-stamping, fineblanking, precision tooling, complex assemblies, and advanced surface treatments for automation, hearing aids, watches, medical, and GDI seats industries.
• AH Metal Solutions Center of excellence for micro-manufacturing and ultra-precise components founded in 1975 in Allerød, Denmark; joined AMFT in October 2024. Produces connectors, studs, micro-contacts, EMC shields, and micro-shields for medical, electronics, and transportation markets.
• E. Winkemann Germany-based center of excellence founded in 1938 in Plettenberg, joined AMFT in 2024. Recognized as one of Europe's most efficient producers of mission-critical stamped and fineblanked components for transportation, industrial, automation, energy systems, and engineered assemblies, with fully integrated production including in-house tool shops and MES-driven monitoring.
• Sko-Die North American hub for heavy gauge stamping and electrical steel laminations founded in 1947 in Morton Grove, Illinois, joined AMFT in May 2025. Specializes in heavy-gauge metal stamping, custom electrical steel laminations up to 42 inches in diameter, and precision die and tooling design for aerospace, defense, power generation, medical, consumer products, and energy industries.
• P&B Metal Components Precision manufacturer of precious and base metal electromechanical contacts founded in 1961 as a family-owned business with operations in Sheffield, UK and Johor Bahru, Malaysia, joined AMFT in 2026. Products include contact wire welded assemblies, profile tape welded assemblies, bi-metal strip, contact rivets, precision stamped parts, and plastic-metal over-mold assemblies serving electrification, automation, and controls segments.
• Stamping Custom metal stamping and micro-stamping service producing precision parts across a wide range of shapes, sizes, and materials, including progressive stamping, fineblanking, four-slide/multi-slide stamping, and tooling/die engineering for transportation, aerospace, defense, medical, power generation, and electronics industries.
• Engineering & Design Services Engineering-driven precision manufacturing partnership providing collaborative design, materials science, prototyping (including 3D-printed models and in-house prototype tooling), tooling optimization, and process optimization, delivering measurable improvements in fatigue life, weight reduction, cost, and durability.
• Fineblanking High-precision fineblanking service delivering clean sheared edges and tight tolerances within 0.001 inch, with press forces of 160-700 tons, material thickness 0.002 to 0.5 inches, strip width up to ~15.75 inches, and round parts up to 12 inches diameter for safety-critical, load-bearing, and complex mechanical components.
• Deep Drawing High-precision progressive deep drawing service for complex, deep drawn metal parts from simple rivets and eyelets to micro-complex geometries, including specialized titanium deep drawing for dental and medical applications.
• Wire Coiling Custom wire-coiled springs including compression, extension, and torsion springs with engineering-driven tolerances, supported by in-house design, prototyping, testing, and high-volume production resources.
• Flat Coiling Custom flat spiral, power, and constant force springs that store and release energy in the form of torque, built for high repeatability and long life across medical, transportation, aerospace, defense, consumer goods, electronics, and power generation industries.
• Micro Coiling Custom micro-coil manufacturing with wire diameters from 0.001 to 0.007 inches using high-speed, high-precision coiling technology across stainless steel, platinum-iridium alloys, and music wire, for catheter guidewires, aneurysm treatments, ablation leads, neurovascular intervention, pacemakers, defibrillators, electrical contacts, and automotive sensors.
• Multi-Slide Forming Custom four-slide and multi-slide stampings and wire forms for complex configurations and cost-efficient high-volume production, including braces, cotter pins, fasteners, hangers, hinges, latches, and spring clips serving transportation, aerospace, medical, and electronics industries.
• Mechanical Assembly Complete mechanical assembly and sub-assembly services combining stamped and formed components into ready-to-install assemblies, including semi-automatic lines, manual precision assembly, riveted joints, welded connections, and press-fit mechanics for turbocharger linkages, actuation mechanisms, brackets, housings, electrical connectors, and structural sub-assemblies.
• Contact Riveting High-quality controlled riveting processes for mechanical integrity, electrical performance, and reliability of critical electrical contact assemblies, including riveted electrical contact assemblies, solid and bi-metal rivet manufacturing, and design-for-manufacture support.
• Finishing Processes Comprehensive in-house finishing and superfinishing service including ISO finishing on over 30 machines, superfinishing, advanced brushing and washing, shot peening, automatic sorting with camera and laser inspection, linear deburring, double-face grinding to ±0.00020 inch accuracy, and advanced grinding for asymmetrical geometries.
• Heat Treating Heat treating processes enhancing mechanical properties, dimensional stability, and performance of metal components, including hardening in continuous belt and chamber furnaces, tempering, nitriding/nitrocarburizing, and case hardening, with full CQI-9 compliance and trained specialist technicians.
• Laser Cutting High-precision laser cutting using an Amada 2500-Watt laser system with tolerances of ±0.002 inches, cutting capacity for steels 0.0185 to 0.500 inches thick and large sheet format 60 by 120 inches, suited to prototype development, limited-run production, and complex shapes without new tooling costs.
• CNC Machining Advanced CNC machining, wire EDM, and sinker EDM service for precision tooling, die manufacturing, prototype development, and high-accuracy component production, using equipment including a Toyoda FV-1565 Vertical Machining Center (65 by 25 inch table) and Agie EDM.
• Tooling Design & Fabrication Complete in-house tooling capability from concept and CAD modeling to full production tooling and rapid maintenance, including precision stamping tools, steel and carbide lamination dies, compound dies, progressive dies, fineblanking dies, draw dies, and progressive form dies supporting stamping, forming, fineblanking, deep drawing, and lamination programs.
• Welding Advanced welding processes for high-precision electrical contact assemblies and welded motor components, including in-lay and on-lay precious metal strip welding, multi-stripe bimetal production, high-precision wire-welded contact assemblies, profile tape welded contact assemblies, solid bi-metal and tri-metal layered contact tapes, robotic plasma welding for stator and rotor lamination stacks, and manual MIG, TIG, and spot welding.

Quantifiable outcome

• Zero-defect quality philosophy supported by advanced quality systems and SPC-driven inspections
• +2 more outcomes

Named customers5 records

Segments8 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

Scale indicators7 records

Recent moves8 records

Expansion highlights6 records

Direct peers

• Barnes Group: Barnes Group (NYSE: B) is a global industrial and aerospace manufacturer producing engineered components, including the original owner of Associated Spring before the 2020 buyout that created AMFT. Directly comparable on aerospace components, spring manufacturing, and precision forming heritage and end-market exposure.
• MW Industries: MW Industries is a PE-backed (Stone Canyon) precision engineered components platform producing springs, washers, fasteners, and formed metal components serving aerospace, medical, automotive, and industrial end markets. Most directly comparable to AMFT given similar portfolio breadth, end-market mix, precision metal forming capabilities, and PE-backed roll-up model.
• Peterson Spring: Peterson Spring is a precision spring and metal forming manufacturer serving automotive, aerospace, and industrial markets. Comparable to AMFT's Associated Spring heritage in precision spring manufacturing for mission-critical applications.
• Martinrea International: Martinrea International (TSX: MRE) is a Canadian Tier 1 automotive supplier producing metal stampings, chassis, and powertrain components globally. Comparable to AMFT on metal forming capabilities, automotive end-market focus, and multi-region manufacturing footprint.
• Gestamp: Gestamp is a global Tier 1 automotive metal forming and stamping supplier with significant operations in EMEA, Americas, and Asia. Comparable to AMFT on large-scale precision metal stamping and forming for automotive OEMs and Tier 1s.
• Lee Spring: Lee Spring is a catalog and custom precision spring manufacturer (part of MW Industries) serving aerospace, medical, and industrial markets. Comparable to AMFT on spring product categories and engineering-driven custom solutions.
• Flex-N-Gate: Flex-N-Gate is a privately held Tier 1 automotive metal stamping and assembly supplier with US and international operations serving major OEMs. Comparable to AMFT on heavy-gauge metal stamping, automotive Tier 1 relationships, and supply chain resiliency.

Broad incumbents

• Linamar Corporation: Linamar (TSX: LNR) is a diversified Canadian manufacturer producing precision metal components, powertrain systems, and assemblies for automotive and industrial markets. Comparable to AMFT on broad precision metal forming capabilities and tier-1 automotive exposure.
• Precision Castparts Corp: Precision Castparts Corp (Berkshire Hathaway subsidiary) is a global manufacturer of complex metal components for aerospace, power, and industrial markets. Comparable to AMFT on mission-critical precision metal components for aerospace OEMs and Tier 1s at substantially larger scale.
• Voestalpine: Voestalpine is an Austrian steel-based technology group with automotive and industrial metal forming component businesses serving OEMs globally. Comparable to AMFT on automotive and industrial precision metal forming at larger, integrated scale.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks5 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/associatedmetalformingtechnologies

Compliance13 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles8 records

Subsidiaries6 records

Funding overview

Funding rounds

Investors

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

M&A1 record

Investments

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

Frequently asked questions about Associated Metal Forming Technologies