CNC machine shops in Missouri

Compare listed CNC and precision machining profiles in Missouri 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 Missouri

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

Brown Industries

📍 Kansas City, MO Est. 1976
Specialties: CNC precision machining4-axis lathe machiningCast iron machiningLarge component re-work

Essex Industries

📍 St. Louis, MO Est. 1947
Specialties: Platform controlsAircraft componentsEmergency breathing equipmentLiquid oxygen equipment

KC Machine

📍 Excelsior Springs, MO Est. 2000
Specialties: Precision CNC machiningWaterjet cuttingMachine tool repairWelding and fabrication

LeVic Plastics

📍 Grandview, MO Est. 1971
Specialties: Custom plastic injection moldingMold designSecondary operationsCNC machining

LMI Aerospace

📍 Saint Charles, MO
Specialties: Structural assembliesFabricated componentsPrecision machiningWing components

McCay Tool & Engineering

📍 Saint Louis, MO Est. 1950
Specialties: Precision machiningCNC machiningCNC turningFabrication

Missouri Precision Machining

📍 Wentzville, MO
Specialties: Precision CNC machiningCustom metal fabricationPrototypingHigh-volume production

Natoli Engineering Company

📍 Saint Charles, MO Est. 1973
Specialties: Tablet compression toolingTablet pressesNCF-45 Capsule Filling MachineReplacement parts

Pete & Jake's Hot Rod Parts

📍 Peculiar, MO Est. 1974
Specialties: Hot rod chassisSuspension systemsChassis componentsClassic car restoration parts

CNC & Precision Machining supplier landscape in Missouri

UNITEMFG currently matches 15 published supplier profiles to CNC & Precision Machining in Missouri, spanning 12 listed cities. The largest concentrations in the directory are St. Louis (3 suppliers), Saint Charles (2 suppliers), and Bland (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 (4 profiles), Precision CNC machining (2 profiles), and Precision machining (2 profiles). The supplier set spans Aerospace (5 profiles), Machinery (5 profiles), and Automotive (2 profiles) among its most represented industries. Published certification fields most often mention ISO 9001:2015 (1 profile) and ITAR Registered (1 profile).

Because the matching profiles span 12 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

  • St. Louis3
  • Saint Charles2
  • Bland1
  • Excelsior Springs1
  • Grandview1
  • Hazelwood1
  • Kansas City1
  • Peculiar1

Commonly listed capabilities

  • CNC machining4
  • Precision CNC machining2
  • Precision machining2
  • Structural assemblies2
  • Welding and fabrication2
  • 4-axis lathe machining1
  • Aerospace assemblies1
  • Aerospace brackets1

Industries represented

  • Aerospace5
  • Machinery5
  • Automotive2
  • Healthcare1
  • Other1
  • Plastics1

Materials and credentials listed

  • ISO 9001:20151
  • ITAR Registered1

This Missouri 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 Missouri

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 Missouri?

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