In brief
Identify each intersection that matters, define the acceptable edge condition, and agree how that condition will be observed and recorded. A general instruction to remove burrs does not specify the acceptance limit, inspection access or sampling scope.
Identify the edges that require inspection
Use a section view or marked detail to identify the intersections of the main bore and cross holes. Numbering the edges gives the drawing owner, supplier and inspector a shared reference. Include edges hidden from an external view rather than assuming that an outside inspection covers them.
Explain why each edge matters to the part design: it may be near a sealing feature, a moving component or a flow passage. Use that function to decide which questions need answering. Do not convert the application description into an assumed burr-size limit.
- Cross-hole intersections identified on a section or detail
- Entry, exit and internal edges distinguished
- Nearby sealing or precision surfaces identified
- Inspection access discussed before quotation
Define the acceptable edge condition
ISO 13715 addresses indication and dimensioning of edges whose shape is not geometrically defined. If a specific chamfer or radius is required, define that geometry on the drawing instead of relying on an undefined-edge note. The standard reference does not choose a functional acceptance limit for your part.
Distinguish an attached burr, an allowed edge break and loose material. State the permitted condition and the agreed method for deciding conformity. Avoid a blanket edge-breaking instruction where it could alter a sealing land or another controlled feature.
References: ISO 13715:2017: Edges of undefined shape
Agree on a method that can see the feature
Ask the supplier how the specified internal intersection can be accessed and observed. Depending on the part, a proposed method might include magnified inspection, an internal viewing tool or an agreed sectioned sample. Select a method that can reach the marked edge and demonstrate the specified acceptance condition; confirm its feasibility during the quotation review.
Define viewing conditions and reference images if visual acceptance is proposed. If the characteristic is dimensional, state the measurement method and its required suitability. A photograph without scale, location or acceptance criteria is only a record of appearance.
| Field | Required decision |
|---|---|
| Location | Which intersection and which edge? |
| Acceptance | What condition or limit is permitted? |
| Method | How can the required characteristic be observed or measured? |
| Scope | Which parts or samples are inspected, and when? |
| Record | What result, image or measurement must be retained? |
| Reaction | What happens when the result does not conform? |
Separate edge inspection from cleanliness and testing
An acceptable edge does not by itself establish that the passage is free of loose particles. If cleanliness is a requirement, define it separately with its own verification and packaging requirements. Likewise, an inspection of an internal edge does not establish the pressure or leakage rating of a component.
Agree the inspection scope before pricing: first-off approval, a defined production sample or another agreed arrangement. Do not assume that a general inspection statement means every internal edge on every part has been checked. Changes to tools, finishing or geometry should be reviewed against the agreed inspection plan.
- Edge condition and loose-particle requirements separated
- Sampling scope and inspection stage agreed
- Nonconformance and reinspection steps recorded
- Required reports included in the RFQ scope
Sources & scope
Source pages checked on 2026-09-24. Publisher summaries and manufacturer references help identify the subject; they do not replace the specified standard or a reviewed part drawing. The checklists are editorial guidance for quotation preparation. External suppliers’ capabilities and certifications are not BOREVIA claims.
- ISO 13715:2017: Edges of undefined shape
Publisher abstract for edge indication and dimensioning. Inspection-plan questions here are draft editorial guidance, not a reproduction of the standard or an approved part specification.
From preparation to a defined RFQ
Bring the drawing and the open questions
State the part revision, material, quantity and inspection requirements. Pricing and feasibility need a review of the actual request.
Request an engineering quote