NEC
U31A
Advanced Machinery Repairman
A Navy Enlisted Classification: a skill designation sailors hold in addition to their rating. Part of the Machinery Repairman rating
Description
Performs calculations using basic algebra and trigonometry to manufacture from blueprints, 1-2-3 blocks, spur, helical, bevel gears, and worm/worm wheels utilizing engine lathes and universal milling machines. Understand the set up and operation of the vertical turret lathe, and horizontal boring machine for machining large bulky items. Sharpen and restore drill bits, pump shafts and various milling machine cutters utilizing tool and cutter grinders, surface grinders and cylinder grinders. Understand the operation and function of the electric disintegrator to remove broken bolts and taps. Understanding the nature and physical properties of metal and alloys with demonstration and practice in metal testing, identification and heat treating.
Core Skills
- precision machining
- blueprint interpretation
- gear manufacturing
- lathe operation
- milling machine operation
- grinding operations
- metal identification
- heat treatment
- trigonometric machining calculations
- broken fastener removal
Common Certifications
- NIMS Machining Level I Certification
- NIMS CNC Milling Level I
- NIMS CNC Turning Level I
- AWS Certified Welder
- Certified Manufacturing Technologist (CMfgT)
- OSHA 30-Hour General Industry
Civilian Career Paths
- MECHANICAL ENGINEERING
- FACILITIES MANAGEMENT
Training & Development
Getting Started
- NIMS Measurement, Materials, and Safety Certification
- NIMS Machining Level I Certification
- Blueprint Reading for Machinists
- OSHA 10-Hour General Industry
Career Growth
- NIMS CNC Milling Level I
- NIMS CNC Turning Level I
- Certified Manufacturing Technologist (CMfgT)
- NIMS Tooling and Inspection Certification
Equivalent Roles in Other Branches
Data sourced from official Navy publications and public military occupational references. Descriptions may be summarized for clarity. Verify all information with your branch career counselor or official military documentation before making career decisions.