CNC machine shops in South Carolina

Compare listed CNC and precision machining profiles in South Carolina by process fit, inspection, and whether the shop is quoting a prototype or a production release.

Clusters this page covers

  • Job shops quoting one-off, prototype, and service parts from a drawing or a worn sample
  • Production cells running repeat releases with fixtures, inspection plans, and packaged delivery
  • Swiss, five-axis, and hard-milling specialists for geometry a three-axis mill should not own
  • Aerospace, medical, and automotive shops where documentation is part of the part

Selection rules

  1. Name the process first: CNC milling, turning, Swiss, five-axis, or a combination. “Machining” is not a process.
  2. Ask which operations stay on the same floor. A shop that mills and then farms grinding or EDM is a different quote than a shop that finishes in-house.
  3. Separate prototype cells from production cells. The same building can do both; the same cell usually cannot.
  4. Require the same revision, material condition, quantity, and inspection assumption from every shortlisted shop.
  5. Use a state page when you need a visit, a milk run, or a replacement part recovered this week. Use this national page when the process is rare.
  6. Directory listing is not a capability statement. Open the profile, then confirm machine, material, and inspection evidence with the shop.

When to use a job shop, a production cell, or a specialist

CNC shops are not interchangeable. Choose the operating model before you compare listed profiles.

When this is the jobUseWhy
A prototype, service part, or one-off with an incomplete process planJob shopYou need setup judgment and a readable quote, not a fixture that will never pay back.
A released print with a weekly or monthly release and a packaged-delivery assumptionProduction machining cellThe award is repeatability, inspection, and change control — not first-article heroics.
Small diameters, long parts, hard metals, or five-sided geometry in one setupSwiss, hard-mill, or five-axis specialistThe wrong machine family makes a cheap hourly rate expensive.

How to source this work

Use a CNC or precision machine shop when the part is made by cutting metal or engineered plastic to a drawing, and the award depends on process, tolerance, inspection, and setup—not on a generic “machining” label.

Include in the RFQ

  • controlled 2D drawing and current 3D model, with revision
  • material grade, temper or condition, and any approved substitutes
  • critical dimensions, GD&T, and surface-finish callouts
  • prototype versus production quantity and likely reorder cadence
  • inspection method, first-article expectation, and any certs the lot must carry

Questions that separate suppliers

  • Which operations stay in-house: milling, turning, Swiss, grinding, EDM, or finishing?
  • How will the critical dimensions actually be inspected?
  • What drives setup cost and lead time on this revision?

Questions this page can answer

How should a buyer compare CNC machine shops in the U.S.?

Start with the process on the print, then the inspection method, then whether the shop is quoting a prototype or a production release. Listed plant counts show who is in the directory. They do not prove current capacity, machine fit, or quality-system scope.

What belongs in a CNC machining RFQ?

A current drawing and model, revision, material and condition, critical tolerances, surface finish, quantity, and the inspection or certification the lot must carry. Missing any of those is why shops pad lead time or decline the quote.

Listed CNC & Precision Machining Companies in South Carolina

Results are ordered alphabetically. Inclusion is based on the matching process or industry recorded on each published profile.

Bunty LLC

📍 Greenville, SC Est. 2000
Specialties: Titanium PartsMagnesium PartsMachined PartsForged Parts

Collins Machine Works

📍 North Charleston, SC Est. 1964
Specialties: Large CNC MachiningConventional MachiningFabricationEquipment Repairs

Hastreiter Industries

📍 Charleston, SC
Specialties: 5-axis Milling4-axis Turning3D PrintingPrecision CNC Machining

Machine Shop Services Inc

📍 Duncan, SC Est. 1978
Specialties: 4-axis CNC MachiningPrecision MachiningConventional MachiningPress Brake Forming

Marchel Industries Inc

📍 Spartanburg, SC
Specialties: Plastic Injection MoldingCNC MachiningAutomotive Plastic ComponentsCustom Molding

Roberson Machine Company

📍 Inman, SC
Specialties: Aluminum Aerospace MachiningCNC ManufacturingPrecision MachiningAerospace Aluminum Parts

Screwmatics of South Carolina Inc

📍 Greenville, SC Est. 1988
Specialties: CNC MachinesMulti-spindle Screw MachinesPrecision Machined ComponentsComponent Parts Manufacturing

SMF Inc

📍 Greenville, SC Est. 1995
Specialties: Metal FabricationWeldingMachiningAssembly

Southern Air Repair

📍 Greenville, SC Est. 1997
Specialties: FAA Part 145 RepairsMachining RepairsCoating RepairsCSD Repairs

CNC & Precision Machining supplier landscape in South Carolina

UNITEMFG currently matches 11 published supplier profiles to CNC & Precision Machining in South Carolina, spanning 8 listed cities. The largest concentrations in the directory are Greenville (4 suppliers), Charleston (1 supplier), and Duncan (1 supplier). This is a directory-derived view of available suppliers, not an estimate of the entire state market.

The capabilities most often named on matching profiles are CNC Machining (2 profiles), Conventional Machining (2 profiles), and Machined Parts (2 profiles). The supplier set spans Aerospace (4 profiles), Machinery (4 profiles), and Automotive (2 profiles) among its most represented industries. Frequently listed material experience includes Aluminum (1 profile), Brass (1 profile), and Carbon Steel (1 profile). Published certification fields most often mention ISO 9001:2015 (4 profiles), AWS Certified (2 profiles), and AS9100D (1 profile).

Because the matching profiles span 8 cities, buyers can compare several local supplier markets rather than treating one metro as representative of the state. Use the listed capabilities as a first-pass filter, then require each shortlisted supplier to confirm that the relevant process is performed in-house, on suitable equipment, at the required scale.

Supplier locations

  • Greenville4
  • Charleston1
  • Duncan1
  • Inman1
  • North Charleston1
  • Piedmont1
  • Spartanburg1
  • Summerville1

Commonly listed capabilities

  • CNC Machining2
  • Conventional Machining2
  • Machined Parts2
  • Precision Machining2
  • 3D Printing1
  • 4-axis CNC Machining1
  • 4-axis Turning1
  • 5-axis Milling1

Industries represented

  • Aerospace4
  • Machinery4
  • Automotive2
  • Metals1

Materials and credentials listed

  • Aluminum1
  • Brass1
  • Carbon Steel1
  • Copper1
  • Stainless Steel1
  • ISO 9001:20154
  • AWS Certified2
  • AS9100D1

This South Carolina market view is calculated from published UNITEMFG profiles whose process labels map to the CNC & Precision Machining cluster. Counts describe directory coverage, not independently audited capacity, quality, or availability.

How to source CNC & Precision Machining in South Carolina

Use machining suppliers for subtractive production where dimensions, repeatability, material behavior, and inspection requirements drive the sourcing decision.

Include in the RFQ

  • part drawings and revision level
  • material grade and condition
  • critical tolerances and surface finish
  • annual and release quantities
  • inspection and documentation requirements

Questions that separate suppliers

  • Which operations will be completed in-house?
  • How will critical dimensions be inspected?
  • What drives setup cost and lead time for this part?

Need Help Finding CNC & Precision Machining in South Carolina?

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