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Page last updated: October 27, 2026

Buyer guide · Inspection

A sock quality control checklist for bulk orders

Most sock defects are small, and they repeat across thousands of pairs. A checklist works when every line names where in the run it happens and what it is compared against.

The sock quality control checklist below is the one the floor runs, written out so you can run the same one on a shipment.

On this page

The reference

The signed sample is the pass mark

We publish no universal tolerance for stitch density or cuff tension, because that number belongs to your construction rather than to a general standard.

Rows of sock knitting machines along an aisle with blue crates and bags of white yarn

First off the machine is the only check that catches a setting before it repeats across a whole run.

One signed copy stays on file against your order number. Bulk is measured against that copy, so a check has a reference both sides have already touched.

A deviation from that copy is a conversation, and the desk answers it in writing before anything ships. A disagreement about a written number differs from a disagreement about a memory.

Timing

Check during the run, not after it

Three points matter: first off the machine, mid run, and before the carton is sealed. A defect found at the third point has already been packed.

Record the yarn lot at the start. A shade shift between lots shows up in a packed carton rather than on the machine, which is why the lot is written down first.

Colour is checked against the approved standard, not against the previous carton. That check is the one most often skipped under time pressure, and it is the one that produces a mixed shipment.

Reference

Check, where, and against what

Nine checks, where each one happens in the run, and what it is measured against.

CheckWhere in the runMeasured against
Yarn lot and shadeBefore the first courseThe lot set aside for the order
Stitch densityFirst off the machineThe signed sample
Foot lengthFirst off, then mid runThe size chart band
Cuff tensionFirst off, then mid runThe signed sample
Toe linkingFirst off, then mid runNo ridge and no loose end
Heel positionFirst offThe signed sample
Grip dot adhesionFirst offThe signed sample
Colour against standardMid runThe approved colour standard
Pair count and size splitBefore the carton is sealedThe packing list

Nine lines, one reference each. A check with no reference is an opinion, and an opinion does not settle a claim.

Take it to the floor

Print the list, or ask for the record

The nine lines above are set to print on one sheet. Use your browser’s print command and the navigation, the contents list and the buttons drop out, leaving the table with the note beside it and the desk contact in the footer. That printed copy is the one to hand to an inspector or to your own quality team.

If you would rather have a live order checked against the same nine lines, send the order number and the line you care about most. The desk answers in writing, and the inspection record that belongs to the order goes out with that answer.

Ask the desk to run this checklist on your order →

FAQ

Questions buyers ask

Who runs the inspection?

The floor runs the nine checks during the run. A third-party inspection is booked by you, and the desk holds the carton for it. Both can happen on one order, and they answer different questions.

Do you share the inspection record?

Yes, on request against your order number. The desk sends the record itself rather than a summary, so your own quality team reads the entries. Ask for it with the order, while the run still has time to change.

What if a check fails mid run?

The run stops at that point. Write to the desk with the order number and the line that failed, and the deviation plus the re-knit plan come back in writing before packing resumes.

Can I set my own tolerance?

Yes. Write it on the specification sheet and it replaces the sample as the pass mark for that line. It has to be a figure the floor can measure, so a value in cm beats a description.

The styles this guide applies to

Every style on this site is quoted on the terms this page sets out. Both cards open the style’s own page — photographs, specification sheet and terms, without an email first.

Who wrote this guide

This guide was written by Michelle Zhang, Export sales manager at Sock Wholesalers. She sits on the export desk that answers buyer briefs, quotes orders and books freight, which is where the questions in this guide come from.

Full role, direct line and the other guides by the same author: Michelle Zhang, author page.

How this guide was produced: first drafts are prepared with AI assistance, then every claim is checked and the wording finalised by the export desk before publication.

The short version

Three points in the run

First off, mid run, and sealed. Put the same three into a purchase order and the checklist has something to enforce.

Send the construction and the quantity band. The desk replies within one working day with the costing and the check plan.