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Navy NEC · Engineering

U33A NAMTS Inside Machinist

Current service use not established

This code is listed in the directory. Inclusion alone does not confirm current service use.

A Navy Enlisted Classification: a skill designation sailors hold in addition to their rating.

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Overview

A NAMTS Inside Machinist performs intermediate-level maintenance on marine machinery, auxiliary systems, and related equipment to meet Fleet-directed requirements. The machinist follows repair and maintenance standards, applies quality assurance specifications, and properly uses maintenance industrial machinery.

Core Skills

  • Intermediate-level marine machinery and auxiliary maintenance
  • Repair standards and quality assurance specifications
  • Proper use of maintenance industrial machinery

Civilian Career Paths

Career associations are editorial assessments of the cited evidence, not an official crosswalk unless the evidence explicitly says so. O*NET supplies civilian occupation information, not proof of a military match. Related experience does not confer civilian qualifications. Tasks and tools below describe civilian work, not military training.

Machinists

Knowledge of maintenance industrial machinery, repair standards, and quality assurance specifications provides a foundation for machining parts to specification.

How to prepare: Complete a hands-on machining skills assessment covering machine setup, tolerance calculations, and precision measurement to identify any training gaps.

What the civilian work involves
  • Machine parts to specifications, using machine tools, such as lathes, milling machines, shapers, or grinders.
  • Measure, examine, or test completed units to check for defects and ensure conformance to specifications, using precision instruments, such as micrometers.
  • Set up, adjust, or operate basic or specialized machine tools used to perform precision machining operations.

Industrial Machinery Mechanics

Intermediate-level maintenance of marine machinery and auxiliary systems transfers directly to repairing and maintaining industrial machinery.

How to prepare: Build a repair portfolio describing the machinery maintained, procedures performed, and standards followed, then compare it with equipment listed in industrial maintenance openings.

What the civilian work involves
  • Repair or maintain the operating condition of industrial production or processing machinery or equipment.
  • Disassemble machinery or equipment to remove parts and make repairs.
  • Reassemble equipment after completion of inspections, testing, or repairs.

Notes & Sources

Evidence for this guidance (3 documents)
  1. NAVPERS 18068F Vol II (NEOCS, Jul 2026 edition): NEC U33A

    [1] NEC entry "U33A - NAMTS Inside Machinist"; cached text line 11809; NAVPERS 18068F Vol II, 2026-07 edition

    Supports: Intermediate-level marine machinery and auxiliary maintenance, Repair standards and quality assurance specifications, Proper use of maintenance industrial machinery, Machinists (O*NET 51-4041.00), Industrial Machinery Mechanics (O*NET 49-9041.00)

  2. O*NET: Machinists

    [2] O*NET 30.3 occupational data

    Supports: Machinists (O*NET 51-4041.00)

  3. O*NET: Industrial Machinery Mechanics

    [3] O*NET 30.3 occupational data

    Supports: Industrial Machinery Mechanics (O*NET 49-9041.00)

Defense contractor jobs for U33A

Descriptions may be summarized for clarity. Verify all information with your branch career counselor or official military documentation before making career decisions.

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