FREE NCCER Pipefitter Exam Guide 2026: Levels 1-4, Module Tests, Pipefitting Math (Practice Questions)
Video
What is the primary purpose of a dial indicator in millwright work?
Precision Measurement
Question · Easy
Your heart has these. So do pipes.
Short
Free 2026 NCCER Pipefitter exam guide: Contren Learning Series Levels 1-4, Core Curriculum prerequisite, module tests (70% pass, 10-40 MC), NCAP Industrial Pipefitter journeyman assessment (125 Q, 3-hr closed-book, 75% pass), pipe offset math (travel = set × 1.414), rolling offsets, ISO/P&ID blueprints, hydrostatic testing, and an 8-12 week study plan per level.
Blog
Micrometer vs. dial indicator — what does each actually measure?
Precision Measurement & Tools
Flashcard
What type of bearing uses rolling elements between inner and outer races?
Bearings
Trade process of marking baselines with the arc and 3-4-5 methods before cutting or drilling.
Millwright fundamentals
Guess the Term
Introduction
0.1 About the NCCER Millwright Certification
Study guide
Cheat sheet
What is the correct procedure for tightening foundation bolts on heavy machinery?
Machinery Installation
Question · Medium
Read the clue and guess the term in 6 tries.
Game
Why read a micrometer using the ratchet stop instead of the thimble?
What does 'soft foot' refer to in machinery alignment?
Alignment
___ load: force that holds bolted joint members together before an external load is applied.
Which alignment method uses one dial indicator reading the coupling rim and another reading the coupling face?
Lockout/tagout, called like a cup final
What does the vernier scale on a micrometer add beyond the barrel and thimble scales?
What is the purpose of a micrometer in precision measurement?
Constant-___ threads: series such as 8, 12 or 16 threads per inch, common on bolts one inch in diameter and larger.
0.2 How to Use This Study Guide
What type of pump uses an impeller to move fluid?
Pumps
Swap tiles to line up three of the same term.
Term Match
When would a millwright reach for a feeler gauge instead of a dial indicator?
What is cavitation in a pump?
___ bearing: keeps a shaft from moving along its axis.
Bearings and fasteners
What is the function of a conveyor belt tensioner?
Conveyors
Inside micrometer / bore gauge — what does it check that an outside micrometer can't?
What is thermal growth in machinery alignment?
Question · Hard
___ bearing: named for the direction it restrains, it lets a shaft spin while keeping it from moving perpendicular to its axis.
Chapter 1: Hand & Power Tools, Cutting
1.1 Millwright Hand Tools
What is the purpose of a keyway in a shaft?
Flip two cards at a time to find matching terms.
Term Pairs
Optical level vs. laser shaft-alignment system — how do their jobs differ?
What instrument is used to measure shaft alignment using laser technology?
Packing ___: part that squeezes soft rope-like material around a pump shaft to limit leakage.
Gaskets and packing
What is the primary cause of premature bearing failure?
What is a machinist's straightedge used to verify before alignment work begins?
What is a positive displacement pump?
Mechanical ___: device that closes the gap where a rotating pump shaft leaves the casing, using faces instead of rope-like packing.
1.2 Millwright Power Tools
What is the purpose of a coupling in a power transmission system?
Find five hidden terms in a grid of letters.
Term Search
What problem does uncorrected soft foot cause even after a 'perfect' shaft alignment?
Machinery Installation & Foundations
What does NPSH stand for in pump applications?
Assembly that connects a load to material-handling equipment for hoisting.
Equipment installation
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