12197 verified suppliers listed

Steel CNC Machining Shops — Carbon & Alloy Steel Parts

Carbon and alloy steels are workhorses of the machining world, offering a broad range of hardness, toughness, and cost options. CNC shops machine steel grades such as 1018, 4140, and 4340 for shafts, gears, tooling, and heavy structural parts where strength is paramount.

Typical Uses

  • Shafts and gears
  • Tooling and fixtures
  • Structural machine components
  • Agricultural and construction equipment parts
Vancouver, Washington5.0(14)

Volkswagen Audi Custom Performance Parts TIG Welding Aluminum Stainless Steel

+1 360-606-7492Website
Sun Valley, California

CNC machining of aluminum, steel, and exotic alloys. AS9100D certified. Quick-turn prototyping and production runs.

(818) 896-0471Website
Gatesville, Texas

At Padgett Machine Tools, where we offer a complete range of machining and testing services. Since 2002, we’ve been Gatesville’s trusted source for manipulating materials such as stainless steel, alloys, carbon, aluminum, and plastics. We take pride in delivering truly exceptional products every day. Contact us today!

+1 254-865-9771Website
Rochester, New York5.0(1)

For more than 28 years, Paragon Steel Rule Dies has manufactured high quality products for the converting industries. Steel Rule Dies, Laser Machining and…

+1 585-254-3395Website
Manchester, New Hampshire

CNC machining for defense and government contracts. ITAR registered, CMMC Level 2 ready. Aluminum and steel components.

(603) 232-6600Website
Pittsburgh, Pennsylvania4.5(8)

Full Service Parts Making Foundry producing Patterns, Castings, Machining & Finishing. Metals Castings, Grey Iron Castings, Gray Iron Castings, Iron Castings, Manganese Bronze Castings, Brass Castings, Copper Castings, Grey Iron Foundry, Ductile Iron Foundry, Steel mill castings, Custom machinery castings, Pumps, compressor castings, and custom parts.

+1 223-247-8244Website
Shelton, Connecticut

Preferred Tool and Die specializes in manufacturing complex, thin-gauge stainless steel stampings, components and assemblies for medical applications. We provide CNC turning, CNC milling and CNC EDM. From design to delivery, we are your precision machining solution.

203-925-8525Website
Bosque Farms, New Mexico4.0(6)

Albuquerque precision fabrication shop specializing in steel, stainless, and aluminum parts. Build-to-print, prototyping, finishing, and complex projects.

+1 505-869-2222Website
Grenada, Mississippi5.0

Provine Machine Works, a family-owned business in Grenada, MS, offers high-quality CNC machining, steel fabrication, and powder coating services. With a legacy of precision and craftsmanship since 1977, we serve diverse industries with custom solutions. Contact us today to discuss your project needs and experience the Provine difference.

+1 662-226-1512Website
Wichita, Kansas4.3

Pumphrey Machine Wichita KS machine shop, large CNC turning, machining, Turn/Mill, stainless steels and much more. Quality Parts, On Time, Everytime!

+1 316-832-1841Website
Woodbury, Connecticut5.0(1)

Purdy Machine and Manufacturing, LLC is a manufacturer of custom machined tools, jigs, fixtures, and machine components located in Woodbury, CT. We can fabricate your components from a variety of materials from plastics to tool steels in large or small quantities. Keyword: machine shop.

+1 203-917-7542Website
Depew, New York2.0(4)

Looking for a reliable supplier for CNC machining, production machining services? We provide stainless steel and aluminum machining services across the USA. We are focused on precision CNC machining using advanced manufacturing technologies to increase your part quality, tighten lead times and lower your overall costs!

+1 716-681-0810Website
Longwood, Florida5.0(2)

Qustom CNC sells CNC routers and plasma machines for cutting and engraving 3D in wood, MDF, acrylic, polycarbonate, steel, aluminum, and more at the best price.

+1 407-851-5525Website
Indiana, Pennsylvania

Rinval Manufacturing is a precision CNC shop offering engineering, rapid prototyping, and CNC machining services. We bring ideas to life with one-off parts and production runs in aluminum, steel, and plastics.

+1 412-465-0755Website
Marine City, Michigan5.0(3)

We specialize in complete precision gear manufacturing, including gear grinding, gear hobbing, gear repair, and gear replacement services. With over 56 years of expertise, we provide emergency gear replacement with guaranteed results. We proudly serve the machine tool, automotive, mining and mixing, electrical, oil and gas, paper, and steel industries. Our advanced gear cutting and precision gear grinding technologies ensure the highest standards of quality and efficiency. We handle all gearbox

+1 810-765-8302Website
Fox Lake, Wisconsin5.0(2)

Riverstone Machining of Fox Lake, Wisconsin specializes in precision CNC turning and machining, offering a wide material range including steel, stainless steel, and more. Invest in quality with our advanced equipment and competitive pricing. Visit us for top-tier service and on-time deliveries, no matter the project size. We are currently hiring, apply online!

+1 920-928-3771Website
Irwin, Pennsylvania4.5(8)

RJC Manufacturing Services, LLC RJC Manufacturing is a contract machine shop that specializes in CNC machining/turning of precision parts. RJC has years of experience machining a wide variety of materials (carbon steel, alloy steel, stainless steel, super alloys, tool steel, … Read More →

+1 724-836-3636Website

Frequently Asked Questions

What materials do CNC shops use for steel machining?
Carbon and alloy steels are workhorses of the machining world, offering a broad range of hardness, toughness, and cost options. CNC shops machine steel grades such as 1018, 4140, and 4340 for shafts, gears, tooling, and heavy structural parts where strength is paramount. Typical applications include: Shafts and gears, Tooling and fixtures, Structural machine components, Agricultural and construction equipment parts.
How do I choose a CNC shop for steel parts?
Look for shops with documented experience machining steel, relevant certifications (ISO 9001, AS9100 for aerospace), and in-house inspection capability. Request sample or first-article inspection reports before committing to production volumes.
What tolerances can CNC shops hold on steel parts?
Most precision CNC shops can hold ±0.001″ (±0.025 mm) tolerances on steel parts as standard. Tighter tolerances down to ±0.0002″ are achievable with specialized equipment and process controls. Confirm tolerance requirements upfront in your RFQ.

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