Top Suppliers of Screw Machine Products in the U.S.A.

The components that matter most are often the ones you can hold between your fingers. Precision turned parts, Swiss-machined connectors, threaded fittings, and high-tolerance shafts are produced by the screw machine products industry, a sector built around the ability to manufacture complex small-diameter components to exacting specifications, in volume, and with the process consistency that medical, aerospace, and defense customers demand. A surgical implant, a hydraulic fitting, a fuel system connector: each depends on a screw machine shop somewhere in the supply chain to hold a tolerance that most machining operations cannot.

This article examines the current state of the U.S. screw machine products industry using data collected directly from domestic suppliers, explores the key trends shaping the sector in 2026, and highlights the top suppliers serving manufacturers across the country.

Key Facts on U.S. Screw Machine Products Suppliers

MNI, compiler and publisher of industrial business profiles for the U.S. industrial sector and the informational engine behind IndustryNet, directly collects key data points on this essential industry. The following are key findings drawn from MNI's direct, company-by-company verification of U.S. screw machine products suppliers.

• There are more than 500 screw machine products suppliers listed across MNI's database of manufacturers and suppliers.
• Those companies collectively employ more than 13,600 workers nationwide.
• Total reported sales among companies with available data reach approximately $2 billion.
• 28% of screw machine products companies distribute internationally, reflecting the global demand for precision turned components in aerospace, medical, and industrial applications.
• Nearly 10% of these companies import raw materials from outside the United States.
• The average screw machine products company operates out of approximately 29,300 square feet of facility space.
• The average U.S. screw machine products company has been in business for 57 years, with a median founding year of 1972, making it one of the oldest sectors in this series.
• 30.7% of suppliers hold ISO or related quality certifications, reflecting the sector's deep ties to aerospace, medical device, and defense manufacturing where certified quality systems are often a prerequisite for competing.
• Women-owned businesses represent 1.2% of the sector; minority-owned businesses account for 0.6%.
• The Midwest leads the industry at 53%, followed by the Northeast at 27%, a notably high share driven by Connecticut's 41 suppliers, a legacy of the New Britain and Hartford precision parts manufacturing corridor. The South accounts for 11% and the West for 9%. Ohio, Illinois, and Michigan each claim more than 60 suppliers, followed by Connecticut (41) and New York (32).

What Screw Machine Products Suppliers Do

Screw machine products are precision turned components produced on automatic screw machines or CNC Swiss-type turning centers, typically from bar stock fed continuously into the machine. The process is designed for high-volume production of small-diameter parts to tight tolerances, and it has been refined over more than a century to achieve the speed, repeatability, and dimensional accuracy that demanding end markets require.

The product range is broader than the name suggests. Common screw machine products include shafts, pins, bushings, fittings, connectors, studs, spacers, couplings, and threaded fasteners, but the category also encompasses highly complex turned components with multiple features, undercuts, cross-holes, and tight surface finish requirements that conventional machining cannot achieve efficiently. Many suppliers also produce Swiss-turned components for medical and instrumentation applications where part diameters are measured in fractions of a millimeter and tolerances are held to millionths of an inch.

The industry divides broadly into two production technologies. Traditional multi-spindle screw machines run multiple parts simultaneously on a mechanical cam-driven cycle, making them highly efficient for large quantities of simpler parts. CNC Swiss-type turning centers use a sliding headstock and guide bushing to support the workpiece close to the cutting tool, which allows extremely precise work on long, slender parts that would deflect and chatter on conventional lathes. Many shops run both technologies, using multi-spindle machines for commodity volume and Swiss-type machines for high-precision or complex work.

Secondary operations commonly performed within screw machine shops include milling, drilling, grinding, thread rolling, tapping, broaching, knurling, and assembly. Finishing services such as heat treating, plating, anodizing, and passivation are either performed in-house or managed through qualified subcontractors as part of a complete part program.

The industries served reflect the precision requirements of the work. Aerospace and defense, medical devices, automotive, electronics, fluid power, and industrial equipment all depend on screw machine shops for components that must perform reliably in demanding environments.

Largest Screw Machine Products Companies in the U.S.A

According to data collected directly from the nation's manufacturers, below are the largest screw machine products companies in the United States, based on number of companies:

IndustryNet's Top Screw Machine Products Suppliers

Beyond the largest operations, a deep network of specialized screw machine and CNC Swiss turning shops serves manufacturers with precision, flexibility, and the process expertise that complex small-diameter components demand. Many of these shops have built decades of experience in specific materials, tolerances, or end markets, giving them capabilities that general-purpose machining operations cannot easily replicate.

Princeton Industrial Products, Inc.
Elgin, IL

Princeton Industrial Products produces precision-machined components and CNC Swiss and screw-machined parts, including CNC milling, CNC turning, heat treating, and plating, with production runs from 1,000 to 1,000,000 pieces.

Swiss Automation, Inc.
Barrington, IL

Swiss Automation is a large-scale precision turned-components specialist known for Swiss-type CNC machining and tight-tolerance production, serving the medical and aerospace and defense markets, with ISO 9001:2015 and ISO 13485:2016 certifications and ITAR compliance.

A.M. Swiss Screw Machine Products, Inc.
South Elgin, IL

A.M. Swiss Screw Machine Products produces Swiss screw machine components for industrial and commercial customers, serving manufacturers that need tight-tolerance turned parts from a specialized Illinois shop.

Michaels Machine Co., Inc.
Racine, WI

Michaels Machine Co. provides screw machine products and precision machining services under ISO 9001:2015 certification, serving industrial customers in the upper Midwest.

Abbate Screw Products, Inc.
Roselle, IL

Abbate Screw Products produces quality precision machined components under ISO 9001:2015 registration, serving manufacturers that require documented process control alongside precision turned part production.

Automatic Turning & Machining, Inc.
Kersey, PA

Automatic Turning & Machining produces screw machine parts for industrial customers in Pennsylvania and surrounding markets, offering production machining from a long-established regional shop.

Contour Screw Products, Inc.
Arlington Heights, IL

In business since 1978, Contour Screw Products provides quality machining services to industrial and commercial customers in the Chicago metropolitan area.

E & J Machine And Tool, LLC
Wharton, NJ

E & J Machine and Tool produces precision machined parts and screw machine products, serving industrial and commercial customers in the New Jersey and greater New York market.

Kadon Precision Machining
Rockford, IL

Kadon Precision Machining provides precision machining services under ISO 9001:2015 certification, serving manufacturers in the northern Illinois industrial market.

Precision-Tek Mfg., Inc.
Arlington Heights, IL

Precision-Tek Mfg. produces screw machine products and precision machined components under ISO 9001:2015 certification, serving industrial and commercial customers from its Arlington Heights facility.

Bliss Machine Ltd.
Darien, WI

Bliss Machine Ltd. specializes in Swiss screw machine products, serving manufacturers that require high-precision small-diameter turned components from a Wisconsin precision machining operation.

Orion Precision Industries, Inc.
Somerset, NJ

Orion Precision Industries produces precision machined components under ISO 9001:2015 certification and ITAR compliance, operating as a women-owned business serving aerospace, defense, and industrial customers in the Northeast.

Prospect Products, Inc.
Franklin Park, IL

Prospect Products produces precision-machined components including Swiss CNC and conventional machining, serving industrial customers with a broad range of turned and milled component capabilities.

R/C Machining Co., Inc.
Glenwood, MN

R/C Machining Co. operates as a screw machine and CNC specialist, serving industrial customers in the upper Midwest with both traditional and CNC-based production machining capabilities.

Ron Grob Precision Machine Co.
Johnstown, CO

Ron Grob Precision Machine specializes in CNC Swiss screw machining of thread-rolled rods and parts, including lathe and vertical mill machining, centerless grinding, honing, and thread rolling, under ISO 9001:2015 certification.

American Screw Machine Co.
Franklin Park, IL

American Screw Machine Co. produces screw machine products for customers across a range of industries, serving the broad industrial market from its Franklin Park facility.

Electro-Tech, Inc.
Cheshire, CT

Electro-Tech is a precision Swiss turning house holding ISO 9001:2015 certification, serving the medical, aerospace, and industrial markets from its Connecticut facility with a focused Swiss machining capability.

Midwest Screw Products, Inc.
Omaha, NE

Midwest Screw Products produces custom machined components on screw machines, CNC, and Swiss machines alongside grinding services, serving industrial customers across the Great Plains region.

Precision Turning Corporation
Live Oak, FL

In business since 1996, Precision Turning Corporation produces high-precision CNC Swiss screw machine products under ISO 9001:2015 certification, serving industrial and commercial customers from its Florida facility.

Rable Machine, Inc.
Mansfield, OH

Rable Machine operates as a precision machining job shop with capabilities in CNC turning, CNC milling, grinding, honing, drilling, tapping, CNC Swiss turning, CNC screw machining, and assembly, serving a broad customer base across industrial applications.

Record Tool & Die
Adrian, GA

Record Tool & Die produces screw machine products, metal stampings, and sheet metal fabrications, offering customers a combined machining and metal forming capability from its Georgia operation.

2001 Machining
Portland, OR

2001 Machining produces screw machine products across an unusually broad capability range including milling, lathe, Swiss CNC, micro machining, wire EDM, injection molding, welding, laser and waterjet cutting, stamping, laser etching, springs and wire fabrication, and 3D additive metal and plastic manufacturing.

AMS Micromedical, LLC
Sparta, WI

AMS Micromedical provides precision machining, CNC Swiss, 5-axis milling, EDM, grinding, injection molding, assembly, sonic welding, cleanroom packaging, parts finishing, cleaning and passivation, and engineering and design services under ISO 13485:2016 certification, serving medical device customers with a comprehensive micro-precision manufacturing offering.

Force CNC, LLC
Madison, IN

Force CNC produces casting machining, CNC barfeed, CNC milling, production sawing, broaching, welding, and assembly services, serving industrial customers in the Ohio Valley manufacturing region.

Forestville Machine Co.
Plainville, CT

Forestville Machine Co. produces screw machine products and precision machined components under ISO 9001:2015 certification, contributing to Connecticut's deep concentration of precision parts manufacturing suppliers.

P & L Screw Products, Inc.
Franklin Park, IL

P & L Screw Products produces screw machine components for industrial and commercial customers, operating as one of several precision machining shops serving the densely populated Chicago manufacturing corridor.

Quality Screw Machine Products, Inc.
St. Louis, MO

Quality Screw Machine Products produces a wide range of high-volume components and parts for varied manufacturing applications, from simple shafts and spacers to threaded couplings, connectors, and fittings, supplying both individual components and finished parts.

White Rock, Inc.
Logan, UT

White Rock, Inc. provides competitive precision machining with fast quote turnaround, serving industrial and commercial customers in the Mountain West with CNC screw machine and precision turned component production.

Key Trends in Screw Machine Products in 2026

1. Medical Device Demand Sustaining Swiss Machining Growth

Growth in orthopedic implants, minimally invasive surgical instruments, drug delivery devices, and diagnostic equipment continues to drive strong demand for Swiss-type CNC machining, the process best suited to the small diameters, complex geometries, and tight tolerances that medical components require. Customers in this segment typically mandate ISO 13485 quality systems, full material traceability, and cleanroom packaging, creating a high barrier to entry that rewards shops with established medical capabilities. Screw machine shops that have invested in Swiss machining equipment and medical quality systems are finding this one of the most stable and margin-favorable segments available.

2. Aerospace and Defense Activity Keeping Certified Shops Busy

Sustained demand from commercial aircraft production and growing defense procurement are maintaining strong order flow for screw machine shops with AS9100 certification and experience in aerospace alloys including titanium, Inconel, and high-strength stainless steels. ITAR-registered shops producing defense-related components are finding government program work a reliable complement to commercial aerospace, with longer program cycles and less sensitivity to commercial aviation market swings. The combination of medical and aerospace demand is giving well-certified shops meaningful insulation from the volatility that affects less specialized operations.

3. Swiss CNC Investment Replacing Multi-Spindle Capacity

The transition from cam-driven multi-spindle screw machines to CNC Swiss-type turning centers has been underway for decades but continues to reshape the industry's equipment base. Older multi-spindle machines are being retired as replacement parts become scarce and operators with the skills to set and run them age out of the workforce. CNC Swiss machines offer greater flexibility, faster changeover, and the ability to hold tighter tolerances on more complex parts, at the cost of higher capital investment and the need for skilled CNC programmers. Shops that have made this transition are better positioned to compete for higher-value work as the multi-spindle capacity in the industry contracts.

4. Skilled Workforce Development Remaining the Industry's Defining Challenge

The screw machine products industry has one of the oldest average company ages in this series, and the workforce that built it is aging at roughly the same rate. CNC Swiss turning requires a combination of programming knowledge, tooling intuition, and materials expertise that takes years to develop, and shops across the country report difficulty finding qualified machinists and setup technicians. Apprenticeship programs, community college partnerships, and in-house training pipelines are helping some shops manage the transition, but workforce development is consistently cited as the most significant constraint on growth and capacity for the sector as a whole.

5. Automation Improving Throughput and Consistency

Bar-fed CNC Swiss turning is already one of the more automation-friendly machining processes, since parts can run lights-out with minimal operator intervention once a job is set up correctly. Shops are extending this advantage with robotic part handling, automated inspection integration, and tool wear monitoring systems that reduce scrap and extend unattended run times. These investments are particularly valuable for shops serving medical and aerospace customers who require statistical process control data and in-process measurement documentation alongside the parts themselves.

6. Reshoring and Nearshoring Creating New Domestic Opportunities

Precision turned components were among the categories most heavily sourced offshore in the 2000s and 2010s, particularly to suppliers in Taiwan, China, and Eastern Europe where labor costs were substantially lower. Quality problems, intellectual property concerns, and supply chain disruptions have prompted a significant number of U.S. buyers to requalify domestic screw machine suppliers for components previously sourced internationally. Shops with available capacity, strong quality documentation, and competitive cycle times are actively capturing this returning business, particularly in medical and defense categories where offshore sourcing was always more problematic.

7. Material Diversity Expanding Process Demands

Manufacturers across industries are specifying harder, more exotic, and more challenging materials in their turned components, including titanium, cobalt chrome, Inconel, PEEK and other engineering polymers, and specialty stainless grades that impose significantly higher demands on tooling, coolant, and cutting parameters than conventional brass, aluminum, or carbon steel. Shops that have developed materials expertise and invested in the right tooling and process knowledge for difficult materials are differentiating themselves from competitors still focused on conventional bar stock. This expertise is particularly valued in medical and aerospace programs where material selection is driven by performance requirements rather than machinability.

Conclusion

The U.S. screw machine products industry is one of the most technically demanding and certification-intensive sectors in American manufacturing, with a 30.7% ISO certification rate that reflects how deeply this work is embedded in aerospace, medical, and defense supply chains. With 495 suppliers averaging 57 years in business, the sector carries more accumulated process knowledge per company than almost any other industry in this series, and that institutional expertise is one of its most durable competitive advantages.

As Swiss machining investment continues, medical and aerospace demand remains strong, and reshoring returns previously offshored precision components to domestic shops, the screw machine products sector is navigating a transition that rewards technical capability, quality system investment, and workforce development. Finding the right supplier starts with matching the part requirements to the shop's process capability, whether that means a high-volume multi-spindle operation, a Swiss-type specialist, or a full-service precision machining partner that can carry a program from raw bar stock to finished, inspected, and packaged components.

See all 500+ U.S. screw machine products suppliers on IndustryNet.

The Easiest Way to Find Screw Machine Products Suppliers

IndustryNet can help you narrow down your search for screw machine products suppliers, or any other type of supplier. Perform searches by company type, distribution, geography, specialty, and even ISO standards. Search, sort, and quote for free on America's most-trusted industrial marketplace.

About This Data

MNI collects detailed information firsthand, making direct contact with each industrial company in the U.S. to verify multiple data points about their business. This data powers IndustryNet, an industrial sourcing platform connecting buyers with suppliers across thousands of product categories, and IndustrySelect, which offers real-time access to detailed company and executive profiles for sales, marketing, recruiting, and research.