Confirm critical dimensions first
Inspection effort should focus on characteristics that affect fit, function, assembly, sealing, alignment or other agreed requirements. Confirm the drawing revision, datum structure and measurement basis before results are interpreted.
Not every dimension requires the same reporting method. The inspection scope should be defined for the individual project and aligned with the risks associated with each feature.
Verify material and finish requirements
Check that the specified material and condition are reflected in the production record and that required finishing or treatment has been completed against the agreed specification. Where documentation is required, confirm its format and content before repeat production.
- Material grade and condition
- Heat treatment or downstream process, where applicable
- Surface-finish or appearance criteria
- Masking, coating and protected-feature requirements
Include functional or assembly checks where needed
Dimensional results may not describe every interface. When agreed for the project, assembly checks, mating-part trials or functional verification can identify issues involving clearance, orientation, access or sequence.
The check must have a defined method and acceptance criterion. A general statement that a part “fits” is not a substitute for controlled requirements.
Record the approved revision
Link the accepted first article to the controlled drawing, model, process notes and any approved clarification. This gives future orders a consistent technical reference and reduces the risk of producing against an obsolete file or unresolved assumption.
Resolve deviations before batch production
If a result differs from the agreed requirement, identify the affected feature, measurement method and potential functional impact. The disposition—correction, acceptance or technical change—should be documented before the repeat batch proceeds.
Maintain a repeat-order reference
The approved first-article package can provide a baseline for future production: current revision, critical characteristics, required documents, accepted process notes and packaging expectations. Review that baseline when the drawing, material, process route or supplier resource changes.
Plan inspection around the project
First-article scope, reporting format and subsequent batch inspection should be agreed from the part’s function, drawing controls, quantity and purchasing requirements. No single inspection package is appropriate for every component.