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State of Washington Classified Job Specification


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Class Code: 604E
Category: Maintenance Trades & Labor

Class Series Concept

Perform precise machining and skilled bench-work to build, rework, and repair and maintain precision instruments and research equipment in accord with specifications and instructions.


Perform precision work by operating standard and/or computer numerical controlled (CNC) machine tools such as lathes, mills, grinders, and drill presses to fabricate parts for research, academic and medical purposes, working from blueprints, sketches, specifications, manuals and verbal instructions.

Distinguishing Characteristics

Under direct supervision, operate standard and/or CNC machine tools to fabricate parts.

Typical Work

Work from blueprints, sketches, diagrams, and written and oral instructions;

Plan and lay out work, determine material and fabrication methods to be used under the direction of the supervisor or lead;

Construct parts from standard and exotic metals and alloys, plastics, wood, rubber, ceramic, etc.; perform welding, brazing, soldering and heat treating;

Make special tools, templates, gauges, fixtures and securing devices as needed; sharpen tools and maintain machinery and special equipment; test and calibrate instruments and operational apparatus when completed; repair or rework when needed;

Perform basic welding; using shielded metal arc welding techniques;

Perform basic sheet metal fabrication;

Perform related duties as required.

Legal Requirement(s)

There may be instances where individual positions must have additional licenses or certification. It is the employer’s responsibility to ensure the appropriate licenses/certifications are obtained for each position. 

Persons legally authorized to work in the U.S. under federal law, including Deferred Action for Childhood Arrivals recipients, are eligible for employment unless prohibited by other state or federal law.

Desirable Qualifications

Journey standing as a toolmaker, model builder or developmental machinist


Equivalent education/experience.

Class Specification History

New Class: 1-11-2002
New class code, formerly 4767, effective July 1, 2007.

Revised Legal Requirements; effective June 6, 2024, due to adopted legislative action.