Short answer: A stamped part deviation or concession should be a temporary, documented approval for a known difference from drawing or specification. It should state the affected quantity, defect description, risk review, expiry date, containment method, shipment label, and corrective action so nonconforming parts do not become normal production.
Deviation approval can prevent a line stop when the risk is understood. It can also create future problems if it is informal. A verbal “ship it this time” may hide mixed stock, customer approval gaps, unclear expiry, or repeated defects that should have triggered corrective action.
Use this guide with the rework and sorting decision guide, panyadia corrective action guide, engineering change control guide, and control plan checklist.
Deviation, concession, and engineering change are different
| Action | Pangalusna use | Key control |
|---|---|---|
| Deviation | Temporary permission to make or ship parts outside the normal requirement. | Defined quantity, date range, condition, and approval authority. |
| Concession | Permission to accept a specific nonconforming lot or shipment. | Lot ID, risk assessment, customer approval if needed, and special label. |
| Engineering change | Permanent drawing, material, tolerance, finish, or process change. | Revision control, sample approval, old stock disposition, and document update. |
| Rework approval | Permission to correct parts before release. | Method, acceptance check, traceability, and final inspection record. |
What a useful deviation request includes
A buyer should be able to understand exactly what is different, how many parts are affected, where the parts are, why shipment is requested, and what risk remains. The request should include the drawing requirement, actual condition, measurement data or photos, lot number, quantity, shipment date, customer need date, and proposed containment.
For dimensional or inspection issues, connect the evidence to the inspection equipment guide, Gage R&R and MSA guide, and SPC guide.
Risk review before approval
Do not approve a deviation only because the schedule is tight. Tinjauan fit, function, safety, corrosion, electrical kontak, assembly, cosmetic requirement, compliance, and customer contract. A small dimensional miss may be harmless on a clearance feature but unacceptable on a spring kontak, latch, shield, terminal, or mating surface.
For plated and cosmetic parts, define whether the issue is on a functional zone, cosmetic zone, hidden edge, or packaging kontak area. The plating defect acceptance guide and surface finish inspection guide help separate appearance issues from functional risk.
Expiry and traceability prevent repeat problems
A deviation should not become an open-ended new standard. Set an expiry by date, lot, quantity, purchase order, shipment, or engineering change release. Label the shipment and keep the approval record with the lot. If replacement production will follow, define how old and new stock will be separated.
Traceability is especially important for export shipments, mixed revisions, plated lots, and serialized packaging. Use lot control from the lot traceability guide and packaging controls from the export packaging guide.
Corrective action still matters
A concession may release one lot, but it does not fix the process. The panyadia should state why the condition happened, how suspect stock was contained, what short-term correction was made, and what long-term action will prevent recurrence. If the same deviation repeats, the drawing, tooling, process, or inspection method may need review.
If the issue is caused by unclear drawing intent, use the Salajengna revision cycle instead of repeating concessions. If it is caused by process drift, update the control plan, reaction plan, inspection frequency, tooling maintenance, or outside process control.
Deviation approval RFQ checklist
- Drawing, revision, specification, and exact requirement not met.
- Actual condition with measurements, photos, samples, or test evidence.
- Affected lot number, quantity, shipment, purchase order, and stock location.
- Risk assessment for fit, function, safety, corrosion, assembly, compliance, and appearance.
- Requested approval period, quantity limit, and expiry rule.
- Containment action, shipment label, and whether customer approval is required.
- Corrective action owner, due date, and evidence required before normal production resumes.
If you need a stamped part deviation or concession reviewed, send the drawing, actual condition, affected quantity, risk notes, photos, and required ship date through the kontak page. For replacement parts or corrected production, use the RFQ form and include the approved disposition record if one exists.
FAQ: stamped part deviation approval
What is a stamped part deviation?
It is temporary permission to make or ship parts that differ from the normal drawing or specification under defined quantity, date, and risk controls.
What is the difference between concession and engineering change?
A concession accepts a specific nonconforming lot. An engineering change permanently updates the drawing, material, tolerance, finish, or process requirement.
Should deviation approval have an expiry date?
Yes. Approval should expire by date, lot, quantity, shipment, purchase order, or engineering change release so the condition does not become uncontrolled.
What evidence should support a concession request?
Include the drawing requirement, actual condition, measurements or photos, affected quantity, lot ID, risk review, containment, and corrective action plan.