CMMC compliance for CNC machining
CMMC Compliance for CNC Machining
CNC machine shops sit at the heart of the defense supply chain, handling G-code files, CAD/CAM models, and toolpath programs that qualify as Controlled Unclassified Information. We get your shop floor and IT network to CMMC Level 2 without disrupting production.
Schedule a free consultationWhy CNC Machining Companies Need CMMC Compliance
CNC machining shops produce the precision components that keep the defense industrial base running, and they do it from technical data packages (TDPs) that are some of the most sensitive unclassified information in the DoD ecosystem. Every drawing, G-code file, CAD/CAM model, and toolpath program delivered by a prime contractor is almost always marked or flow-down treated as Controlled Unclassified Information under NIST SP 800-171 and DFARS 252.204-7012.
The challenge for machine shops is unique: your shop floor runs legacy Fanuc, Siemens, Haas, Mazak, and Okuma controllers that were never designed with cybersecurity in mind. DNC servers, USB sticks, post-processors, and CAM seats move files freely between engineering and the production floor. Most shops also carry ITAR and EAR obligations on top of CMMC, which turns a single unsecured workstation into a potential export violation.
Primes like Lockheed Martin, Boeing, Northrop Grumman, Raytheon, and General Dynamics are already flowing CMMC Level 2 requirements down in subcontracts. A shop that cannot demonstrate a current SPRS score, an SSP, and a POA&M will lose eligibility to bid. Worse, a breach of TDP data can trigger both a DFARS 7012 reporting requirement and an ITAR violation investigation.
We specialize in CMMC for CNC shops. We know how to protect machine networks without taking controllers offline, how to scope the CUI enclave so you are not rebuilding the whole business, and how to document the controls in a way that will hold up to a C3PAO assessment.
Controlled Unclassified Information We Protect in CNC Machining
G-Code & Post-Processed NC Files
Machine-ready G-code generated from government-furnished TDPs. Often export-controlled when tied to defense components.
CAD/CAM Models & Drawings
STEP, IGES, SolidWorks, NX, and Mastercam files received from primes; almost always CUI//SP-EXPT or CUI//DCRIT.
Toolpaths & Fixture Designs
Process-specific toolpaths and custom fixture drawings that reveal how a defense part is produced.
Material Certifications & Lot Data
DFARS specialty metals traceability, mill certs, and lot histories tied to defense part numbers.
Inspection Reports & FAIRs
CMM data, First Article Inspection Reports (AS9102), and SPC data linked to CUI drawings.
Purchase Orders & Statement of Work
Prime contractor POs and SOWs that reference DFARS 7012, 7019, 7020, and 7021 flow-downs.
What CMMC services do we provide for CNC machining?
End-to-end CMMC consulting, fixed-price. See how CMMC compliance works.
Gap assessment
A full review against all 110 NIST SP 800-171 controls, with a documented SPRS score and a clear picture of where your CUI lives.
Readiness assessment
A mock assessment that mirrors the official methodology, with objective evidence collection and interview coaching.
Policy and documentation
SSP, POA&M, incident response plan and the supporting policy set, written in plain English for how you operate.
Technical controls
Network segmentation, FIPS-validated encryption, MFA, audit logging, vulnerability management and endpoint hardening.
Managed compliance
Log review, vulnerability scanning, quarterly evidence refresh and annual SSP updates between assessments.
Assessment support
Scoping, scheduling, interview coaching and on-site support during your formal assessment.
CNC Machining: CMMC questions
What CUI does my CNC shop actually handle?
Almost every technical data package a prime sends you is CUI: drawings, STEP/IGES models, G-code, toolpaths, inspection instructions, and material specs. Purchase orders that cite DFARS 252.204-7012 are a strong indicator that the work package contains CUI.
What CMMC level does a CNC shop typically need?
Level 2 is standard for any shop handling CUI. Level 1 applies to shops that handle only FCI. Level 3 is rare for machine shops unless you support a named Priority Program.
Do I have to put my CNC controllers on MFA?
No. NIST 800-171 is risk-based. In most cases we segment the controllers into an OT enclave and apply compensating controls at the enclave boundary rather than on the controllers themselves, which the C3PAO community has consistently accepted.
Schedule a free CMMC consultation
We will review your contracts and DFARS clauses with you at no cost and confirm the level you need.
When was the last time you ran a cyber risk assessment?
Tell us about your environment and your contracts. We will tell you where you stand and what to fix first.