NIMS Certification for Industrial Maintenance: Credentials, Cost and How to Prepare

Short answer: NIMS, the National Institute for Metalworking Skills, issues industry credentials for manufacturing. Its Industrial Technology Maintenance (ITM) Level I program has nine modular credentials, from Basic Mechanical to Electrical Control Systems, which you can earn in any order.

Each credential has two parts:

1. A hands-on performance check, signed off by a sponsor at a school or company.
2. A proctored online theory exam.

On October 25, 2026, NIMS listed fees of $80 for one test or $110 for two (each including one retake), or a $125 one-year subscription covering up to 10 tests. Credentials earned on or after June 30, 2026 are valid for 5 years.

NIMS doesn't sell learner courses. You prepare through a school or employer program, or on your own, and then test through an organization that registers sponsors and proctors.

Researched October 25, 2026 from NIMS's fee, FAQ and renewal pages and its ITM credentialing documents (sources at the end). The ITM starter guide is dated 2018, so we used the current fee page for prices.

Ownership disclosure: PLC Programming and PLC Simulation Software are run by the same team. Our product appears in the preparation section, with its limits stated. It is not affiliated with or endorsed by NIMS.

The nine ITM Level I credentials

NIMS's ITM credentialing guide lists these Level I credentials:

1. Maintenance Operations
2. Basic Mechanical
3. Basic Hydraulic
4. Basic Pneumatic
5. Electrical Systems
6. Electrical Control Systems
7. Process Control Systems
8. Maintenance Welding
9. Maintenance Piping

Each credential's hands-on tasks are listed on its Credentialing Achievement Record (CAR). Ask your testing site for the current documents.

A naming note. The starter guide calls one credential "Electrical Control Systems," while its performance-record document is titled "Electronic Control Systems Level I." Use the name your testing site uses when you register.

The PLC part. The Electronic Control Systems performance record includes the task "Install, wire, transfer programs, and test Programmable Logic Controllers," alongside work with an HMI, a VFD and a motor starter. So PLC skill is assessed by doing it, not only by answering questions.

We found no current public information on an ITM Level II. Ask NIMS or your testing site.

How the test works

From NIMS's ITM starter guide:

1. Performance first. You complete the hands-on tasks on a Credentialing Achievement Record (CAR), at a school or company, supervised by a sponsor. There's no time limit or attempt limit.
2. Then the theory exam. A proctored online exam at your site: multiple choice and true/false, 90 minutes, with an immediate pass or fail result.

NIMS says program accreditation is "optional, not a requirement for testing." You do need an organization that registers sponsors and proctors. In practice that's usually a community college, a high-school CTE program or an employer.

What NIMS certification costs (2026)

The 2018 starter guide shows older, lower fees, so use the current fee page. Whether you or your school pays depends on the program. Your training itself (a college course, an employer program) is a separate cost.

Renewal

NIMS's renewal policy says credentials earned on or after June 30, 2026 expire after 5 years. You renew with proof of continued work experience or by retaking the current theory exam. Credentials earned before that date keep their original terms.

How to prepare

Official and endorsed material. The 2018 guide names the Goodheart-Willcox textbook Industrial Maintenance and Mechatronics and Amatrol eLearning as NIMS-endorsed resources. Tooling U-SME also says its classes prepare learners for NIMS exams; see our Tooling U review. We found no official NIMS practice test.

For the electrical and control credentials, practise the tasks, not just the facts:

• Reading and tracing control circuits. Start/stop seal-ins, interlocks, overloads.
• PLC basics. Inputs and outputs, contacts and coils, timers, counters, and how a program maps to the wiring.
• Transferring and testing a program. Download, go online, force and verify I/O, and recognise when the program and the field disagree.
• Fault-finding. A methodical sequence from the symptom to the failed device.

Our PLC practice exercises include a stop-dominant seal-in exercise and a forward/reverse interlock. Both are the kind of logic a motor-control performance task expects you to understand.

For repetition with automatic checking, PLC Simulation Software's maintenance training (our product) has browser ladder lessons, wiring and fault-finding labs, and a maintenance technician assessment.

• Price: a free tier, then Pro at $29/month or $249/year.
• For schools: a Class plan at $49 per student per year, with a 10-student minimum (product facts).
• Limits: it isn't NIMS material, and it can't replace the hands-on wiring the performance check requires.

Who NIMS certification is for

• Good fit: students in a maintenance, mechatronics or manufacturing program whose school tests NIMS, and employees whose employer uses NIMS for skills validation.
• Good fit: job seekers who want a nationally recognised credential backed by a hands-on check, not only a written test.
• Harder alone: an individual without a school or employer can't easily arrange the sponsor-supervised performance check.

Frequently asked questions

How much does NIMS certification cost?

On October 25, 2026, NIMS listed $80 for one test or $110 for two, each including one retake, or $125 for a one-year subscription covering up to 10 tests. Training to prepare for the test is a separate cost.

Does NIMS offer courses?

NIMS doesn't sell learner courses. Its training pages are for instructors and organizations. Learners prepare through schools, employers and endorsed resources such as the Goodheart-Willcox Industrial Maintenance and Mechatronics textbook and Amatrol eLearning.

How long is a NIMS certification valid?

Credentials earned on or after June 30, 2026 expire after five years. You renew by proving continued work experience or by retaking the current theory exam.

Is there a NIMS practice test?

We found no official NIMS practice test. Study the duties covered by each credential, practise the performance tasks hands-on, and use endorsed textbooks and eLearning for the theory exam.

Sources

• NIMS: credentialing fees
• NIMS FAQ: ITM credentials
• NIMS: ITM credentialing starter guide (v1.2, 2018)
• NIMS: Electronic Control Systems Credentialing Achievement Record
• NIMS: renewal policy
• Tooling U-SME: certification preparation

Related reading

• NOCTI industrial maintenance test prep
• PLC training programs compared
• Maintenance technician interview questions