{"id":2150,"date":"2026-07-01T20:37:35","date_gmt":"2026-07-01T12:37:35","guid":{"rendered":"https:\/\/metalstampingparts.ltd\/?page_id=2150"},"modified":"2026-07-01T20:37:35","modified_gmt":"2026-07-01T12:37:35","slug":"incoming-inspection-stamped-parts-checklist","status":"publish","type":"page","link":"https:\/\/metalstampingparts.ltd\/incoming-inspection-stamped-parts-checklist\/","title":{"rendered":"Incoming Inspection Checklist for Stamped Parts"},"content":{"rendered":"

Short answer:<\/strong> Incoming inspection for stamped parts should verify what can fail in the real shipment: part count, material documents, traceability, dimensions, burr direction, flatness, surface condition, plating, and packaging damage. Use an AQL plan that matches risk, not habit. If a lot misses a critical requirement, stop it early, record evidence, and send the supplier a clear nonconformance note.<\/p>\n

Many buyers treat incoming inspection as a final checkbox. That is a mistake. For stamped parts, the shipment can look orderly while still hiding a bad burr condition, a bent flange, a plating defect, or a mix of lots. A good inspection routine protects the line without turning receiving into a lab. It tells the inspector what to sample, what to measure, what to photograph, and when to escalate.<\/p>\n

If you are building an inspection package for a new part, start with the process documents that define what “good” means. Useful references include the first article inspection checklist<\/a>, the critical dimensions inspection plan<\/a>, and the metal stamping tolerances guide<\/a>. For defect language, keep the defects troubleshooting guide<\/a> and burr control guide<\/a> close by.<\/p>\n

Incoming inspection checklist for stamped parts<\/h2>\n\n\n\n\n\n\n\n\n\n
Inspection item<\/th>\nWhat to check<\/th>\nEvidence to keep<\/th>\n<\/tr>\n<\/thead>\n
Documents and traceability<\/td>\nPO, part number, revision, lot code, material cert, and packing list.<\/td>\nPhotos of labels, certificate file, receiving record, and lot number.<\/td>\n<\/tr>\n
Dimensions<\/td>\nHole size, position, slot width, formed height, angle, and fit features.<\/td>\nMeasurement sheet, gauge ID, sample size, and inspected locations.<\/td>\n<\/tr>\n
Burr and edges<\/td>\nBurr side, burr height, sharp edge risk, and safe handling surfaces.<\/td>\nEdge photos, microscope notes if needed, and defect location.<\/td>\n<\/tr>\n
Surface and plating<\/td>\nScratches, dents, corrosion, oil residue, coverage gaps, color, and adhesion.<\/td>\nPart photos, carton photos, finish spec, and affected quantity.<\/td>\n<\/tr>\n
Packaging damage<\/td>\nCrushed cartons, moisture, loose stacking, mixed lots, and missing separators.<\/td>\nCarton condition, pallet photos, label photos, and count discrepancy.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Sampling should be based on risk and part history, not on convenience. For stable parts with low severity, many teams use AQL with a defined sample size by lot size. For new parts, critical features, or recurring issues, sample more aggressively until the process proves itself. If the part has a safety, fit, or regulatory function, do not let a relaxed AQL hide a serious miss. AQL is a screening method, not a promise that the lot is acceptable.<\/p>\n

Measure the features that control fit<\/h2>\n

For dimensional checks, measure the features that actually control fit and function. That usually means hole size, hole position, slot width, formed height, flange angle, offset, parallelism, and flatness. Use the same gauges, the same fixture logic, and the same revision-controlled print notes every time.<\/p>\n

If a feature is called out as critical, inspect it with tighter sample depth and keep the results tied to the lot number. When the part belongs in a PPAP or FAI flow, tie this receiving record back to the PPAP and FAI package<\/a>.<\/p>\n

Do not overlook burr direction and surface condition<\/h2>\n

Burr checks deserve their own line item. A burr that points the wrong way can interfere with assembly, cut wire insulation, or trap coating. Inspect the burr side, not just the burr size. If the print specifies a safe edge or a burr-free direction, verify it under the same lighting and handling used by the line. A part can pass dimensions and still fail in use because the burr is on the wrong edge.<\/p>\n

Surface and plating checks should focus on what the customer will see and what the assembly will touch. Look for coverage gaps, blistering, discoloration, stain, or uneven thickness where visible. If the shipment is plated, confirm the finish against the purchase order or print notes and watch for rub damage caused by poor packing. Packaging faults often create surface faults, so also review the packaging and shipping guide<\/a>.<\/p>\n

What to send the supplier with a nonconformance<\/h2>\n