What Is PE-M:MD&M?

What the PE Mechanical: Machine Design and Materials Exam Actually Is

PE-M:MD&M stands for Principles and Practice of Engineering - Mechanical: Machine Design and Materials. NCEES labels it officially as the PE Mechanical: Machine Design and Materials exam. It is one of the discipline-specific Principles and Practice of Engineering (PE) exams for mechanical engineers, aimed at people who design, analyze, and select materials for mechanical hardware: shafts, gears, bearings, fasteners, springs, brakes, couplings, pressure-containing parts, and the structures that carry their loads.

It is important to be precise about what this is. It is a licensure examination, not a voluntary certification and not a vendor credential. Passing it is one step toward becoming a licensed Professional Engineer in a U.S. state or territory. There is no separate NCEES certificate to renew; the license itself, and its renewal rules, belong to the board that issues it. If you are new to the terminology, our companion pieces on what PE-M:MD&M means and what PE-M:MD&M stands for cover the naming in more depth.

Who Runs It and Where You Sit for It

The exam is developed and administered by the National Council of Examiners for Engineering and Surveying (NCEES). Testing is delivered by Pearson VUE at approved Pearson test centers. It is a computer-based test (CBT) offered year-round, and the exam is assembled using linear-on-the-fly testing (LOFT), meaning your form is built at the time you test rather than drawn from a single fixed paper edition.

Testing is in person only. There is no remote option for this exam, so you will travel to a center, check in, and complete the session under proctored conditions. For current windows and scheduling logistics, see our guide to PE-M:MD&M exam dates and scheduling.

The Six Official Exam Objectives

The current specification, effective beginning with the October 2025 examinations, organizes the exam into six numbered objectives. These are the issuer's official headings; the topics beneath each are illustrative rather than exhaustive, so treat any list you see (including ours) as a guide to emphasis, not a complete syllabus. For a fuller treatment, read the complete guide to all six PE-M:MD&M content areas.

Where the Questions Concentrate

NCEES publishes question-count ranges for each objective, not fixed percentage weights. We have not converted those ranges into percentages, because the specification does not do so, and neither should your study plan pretend to more precision than exists. The ranges are:

Two patterns stand out. Mechanics of Materials has the largest range, and Mechanical Components and Assemblies is second. Together they account for a large share of an 80-question exam, so weakness in either is expensive. Attachments and Power Transmission are smaller individually, but they are also the topics where a single memorized procedure (bolt preload, gear train ratios, shaft sizing) can convert reliably into points.

Exam Format, Item Types and Testing Conditions

The exam contains 80 questions. That total includes unidentified, unscored pretest items, so you cannot tell which questions count, and every question deserves a real effort. You have 8 hours of testing time inside a 9-hour appointment. The extra hour covers a 2-minute nondisclosure agreement, an 8-minute tutorial, and a 50-minute scheduled break.

Item Types

Do not expect pure single-answer multiple choice throughout. The exam uses multiple-choice and alternative item types, including:

• Multiple-correct (select all that apply)
• Point-and-click (identify a location on a figure or diagram)
• Drag-and-drop (match or order elements)
• Numerical fill-in (type a computed value rather than choosing one)

Scored items receive correct or incorrect credit only. There is no partial credit and no deduction for wrong answers, so you should answer everything. For numerical fill-in items, unit handling and rounding conventions matter because you cannot reverse-engineer the answer from a list of options.

Closed Book, Electronic Handbook

The exam is closed book. You receive a supplied, searchable electronic reference handbook, and personal reference materials are prohibited. You may use one NCEES-approved calculator. Because the handbook is searchable, a portion of your skill is knowing what terms to search and where the relevant equation lives, which is a different skill from recalling a formula from memory. Practice inside the same kind of reference environment, and check our PE-M:MD&M cheat sheet for a condensed list of high-yield facts to anchor your review (remember it is for study, not for the exam room).

Eligibility: Who Controls It

This is the part candidates most often get wrong. Eligibility to sit for the exam, and any approval you must obtain first, is controlled by the licensing board you select, not by NCEES and not by a prep provider. Boards differ in what they require and in the order of steps.

A common licensure pathway looks like this:

1. An engineering bachelor's degree from an EAC/ABET-accredited program
2. Passing the Fundamentals of Engineering (FE) exam
3. Four years of acceptable engineering experience
4. Passing the PE exam

That sequence describes a typical route to licensure; it is not a universal prerequisite for sitting the exam, since some boards allow earlier testing or alternative paths. Similarly, NCEES Record applications for engineering use five U.S.-licensed engineer references, but that requirement belongs to the Record service and is not a universal condition for taking the exam. Always confirm the details with your own board before you pay for anything. Our PE-M:MD&M requirements guide walks through how to check this.

Fees and Registration Mechanics

The NCEES exam fee is US$400 per attempt. Separate board application fees can apply on top of that, and those vary by state or territory. Budget for both, plus preparation materials. NCEES also sells an official practice exam e-book for $59.95, containing 80 questions with solutions, including 24 new questions with alternative item types, aligned to the October 2025 specification. A published erratum for the 2025 practice exam was posted on April 1, 2026, so download it and annotate your copy before you rely on any worked solution.

Because the exam is offered year-round rather than on a single annual date, registration is a two-part process in practice: you establish eligibility with your board, then schedule your seat through the NCEES and Pearson VUE process. See the full PE-M:MD&M cost breakdown for a line-by-line budget.

What the Pass-Rate Data Says

NCEES reports pass/fail results and does not publish a numerical passing score. Your result depends on a scaled score meeting the NCEES minimum-competence standard, which is not a fixed percentage of questions answered correctly. For the January-June 2026 testing population (table updated July 2026), the reported rates were:

Two cautions apply. First, these are modest samples drawn from a specific six-month window, so treat them as a snapshot rather than a permanent benchmark. Second, the gap between first-time and repeat results is a reminder that candidates who fail often fail again unless they change their approach. The PE-M:MD&M pass rate analysis and the passing score explainer go deeper on how to read these figures, and our difficulty guide discusses what makes the exam demanding.

Who Hires Machine Design and Materials Engineers

The Machine Design and Materials discipline fits employers that engineer physical products and the equipment that makes or moves them. Typical settings include:

• Industrial equipment and heavy machinery manufacturers
• Aerospace, defense, and automotive suppliers designing load-bearing hardware
• Power transmission and motion-control companies
• Pressure-equipment and fabrication firms
• Consulting and forensic engineering practices that investigate mechanical failures
• Materials testing, inspection, and failure-analysis laboratories

A PE license matters most where the work requires a licensed engineer to sign and seal documents, supervise others, or serve as an expert, and it can open consulting and leadership routes in the industries above. For salary context, the U.S. Bureau of Labor Statistics reports a median annual wage of $104,110 for mechanical engineers (May 2025). That figure covers the whole occupation; it is not specific to this exam track and does not measure a PE licensure premium. For a fuller discussion, see our salary guide, the ROI analysis, and the overview of PE-M:MD&M jobs.

Sequencing Your Preparation Around the Blueprint

Because the question ranges are uneven, the most efficient plan front-loads the heavy domains and uses the lighter ones as reinforcement. Here is one illustrative ordering tied to the blueprint, not a rigid prescription:

The reasoning: Mechanics of Materials underpins Attachments, Power Transmission, and Components, so mastering it first makes every later domain faster. For a more detailed week-by-week framework, use the study guide, and when you are ready to measure yourself under exam-like conditions, take a full-length run on our PE-M:MD&M practice tests. If you want structured instruction, see PE-M:MD&M training options, and you can always return to the main practice site to drill individual domains.

Frequently Asked Questions

If you are still deciding where to begin, start with the PE-M:MD&M certification overview, confirm your board's rules, and then build your plan around the six official objectives rather than any outdated outline.