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Quality inspection checklist

A quality inspection checklist is the form an inspector fills in to record what was checked on a part or a lot and whether it passed. This one has three parts. First, a record of measured characteristics: the limits from the drawing, the gauge, up to ten readings per characteristic and a pass or fail for each. Second, 18 visual and functional checks covering fit, finish, labels and packaging. Third, the decision for the lot (accept, rework, scrap or hold for the material review board), the count of pieces with a fail, the first pass yield and a link to a nonconformance report. The Excel version marks any reading outside its limits in red, works out the results and the yield, and keeps a lot summary. It suits in-process and final inspection alike; for a supplier's incoming lots there is a separate incoming inspection checklist.

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Page 1 of the quality inspection checklistHeader fields for part, revision, lot and inspector above a table of characteristics with lower and upper limits, gauge, ten reading columns and a pass or fail result.
Measured characteristics, 10 readings18 visual and functional checksPiece result and first pass yieldDecision: accept, rework, scrap or holdLink to a nonconformance reportLot summaryWorked example
Filled-in Quality inspection checklist: a lot of pump housings held for the MRB
The same sheet filled in with the worked example (page 4 of the PDF, illustrative numbers). Open full size (opens the picture in a new tab)

When to use it

When to use a quality inspection checklist

  • For in-process or final inspection of a part where the inspection plan names the characteristics, the gauges and the sample size.
  • When inspectors record readings on scrap paper or in their heads and nobody can reconstruct what was checked later.
  • When you want one form that covers the measured characteristics, the visual checks and the decision for the lot.
  • To track first pass yield by lot and see which lots were accepted, reworked, scrapped or held.
  • Not for a sampling plan that sets the sample size from the lot size; use an acceptance sampling plan to choose that first.

How to fill it in

  1. 1

    Fill in the header from the inspection plan

    Part name and number, drawing revision, lot, lot size, stage, your name, the date and the sample plan. Check that each gauge is the one the plan names and that it is in calibration.

  2. 2

    Write the limits for each characteristic

    Copy the lower and upper limits from the drawing with the unit, and name the gauge or method. One line for each characteristic the plan calls for.

  3. 3

    Measure each piece and write the readings

    Measure every characteristic on each piece in the sample and write the reading, not just a tick. A reading outside the limits is a fail and is circled.

  4. 4

    Do the visual and functional checks

    Go down the 18 checks against the drawing, the approved sample and the defect limits. Mark Pass, Fail or N/A, note how many pieces show a fail, and take a photo of anything unclear.

  5. 5

    Count the result

    A piece fails if any reading or any check on it fails. Count the pieces inspected and the pieces with a fail. First pass yield is the pieces with no fail divided by the pieces inspected.

  6. 6

    Decide, report and sign

    Mark accept, rework, scrap or hold. A hold goes to the material review board and keeps the lot apart. Raise a nonconformance report for any fail and sign the sheet.

What's on the checklist

The 18 visual and functional checks

Four groups: fit and function, finish and appearance, labels and marking, and packaging and quantity. On the sheet each check is Pass, Fail or N/A, with the number of pieces affected and a note; page 1 records the measured characteristics.

Fit and function

Does it assemble and work?

  1. 1Part fits the gauge or the mating part without force
  2. 2Moving parts move freely through their full travel
  3. 3Threads are clean and start by hand, and pass the thread gauge
  4. 4Part passes the functional test or the check fixture
  5. 5Part is complete: no missing features, holes or components

Finish and appearance

Compare with the approved sample and the defect limits

  1. 6No cracks, chips or burrs on edges and surfaces
  2. 7No scratches, dents or marks beyond the limit sample
  3. 8Colour and surface finish match the approved sample
  4. 9No rust, stains or contamination
  5. 10Plating, paint or coating is even, with no bare spots

Labels and marking

Is it identified correctly?

  1. 11Part number, revision and date code are present and correct
  2. 12Label or marking is legible and in the right place
  3. 13Barcode or serial number scans, where one is used
  4. 14Special markings required by the drawing are present

Packaging and quantity

Will it arrive as it left?

  1. 15Quantity in the box matches the label and the paperwork
  2. 16Parts are protected and separated as the packing instruction says
  3. 17Packaging is clean and undamaged, and labelled for the right part
  4. 18Lot or batch number on the box matches the inspection record

A filled-in example

Illustrative, not a benchmark

An example (illustrative): final inspection of 50 pump housings in lot 2214, with 10 housings measured. All names and numbers are made up.

  • Six characteristics are measured on each of the 10 housings: main bore, overall length, flange thickness, hole position, surface roughness and weight.
  • The main bore reads above its upper limit of 25.021 on housings 6 and 9 (25.024 and 25.027). The other five characteristics pass on every piece.
  • In the visual checks, one label is smeared on housing 3. Everything else passes.
  • Housings 3, 6 and 9 each have a fail, so 3 of 10 pieces fail and the first pass yield for the sample is 70%.
  • The lot is held for the material review board and a nonconformance report is raised.

The lot summary after a month of eight lots shows 5 accepted, 1 reworked, 1 scrapped and 1 held, and a first pass yield of 90% across the 90 pieces inspected.

Common mistakes

  • Ticking instead of measuring

    A tick says it passed, not by how much. Write the reading so a drift towards the limit shows up before parts fail.

  • Using the wrong drawing revision

    Limits copied from an old revision pass parts that are wrong. Write the revision on the sheet and check it against the released drawing.

  • Measuring with a gauge that is not in calibration

    A gauge past its calibration date makes every reading doubtful. Check the date before the first piece.

  • Fixing the part and not recording the fail

    Reworking a failed piece on the spot hides the problem and keeps the yield looking good. Record the fail first, then rework.

  • Releasing a held lot without the decision

    A lot on hold stays apart until whoever owns the decision signs. A verbal OK leaves no record and no one accountable.

Download the template

Free to use: print it, copy it and edit it for your team. Enter your name and work email once to download.

Run this template in LeanSuite

In LeanSuite quality issues are logged as tags, ranked in the QA Matrix and traced to their root cause, and digital instructions and checklists with number limits, required photos and signatures build quality into every task.

See it in a 45-minute demo

FAQ

Quality inspection checklist: common questions

  1. The part, drawing revision and lot, the characteristics to measure with their limits and gauges, the readings, the visual and functional checks, the decision for the lot and the inspector's sign-off. This template has all of these.

  2. In-process inspection checks parts during production so problems are caught early and close to their cause. Final inspection checks the finished product before it ships. The same record works for both; you note the stage in the header.

  3. Use the sample size in your inspection plan or sampling plan. This record has room for ten pieces per sheet; continue on a second sheet for a larger sample. An acceptance sampling plan sets the sample size from the lot size.

  4. It is the share of pieces that pass every check the first time, with no rework. Divide the pieces with no fail by the pieces inspected. On a sample it is a result for the sample, not a forecast for the whole lot.

  5. MRB is the material review board. A lot held for the board is kept apart, and the board decides whether to accept it as is, rework it, return it or scrap it. The inspector records the finding and does not decide alone.

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