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How to specify a Machined Part

What to put on an RFQ for Machined Part: the ratings, documents, and constraints that change the quote.

25 Oct 2026 · 3 min read · Tradinor Desk

Specification points for Machined PartTRADINOR · FIGUREWhat to lock for Machined PartDimensionsSurfaceCertificateQuantity
Put these on the RFQ for Machined Part before you compare prices.

A buyer searching for Machined Part is usually trying to stop a bad substitute. A metal product is specified by alloy, temper or grade, dimensions, and the certificate. The notes below are selection criteria for a Machined Part. They are not a catalog promise. Confirm every rating on the current datasheet, drawing, or test report for the revision you will receive.

What has to be true of Machined Part

A metal product is specified by alloy, temper or grade, dimensions, and the certificate. For a Machined Part, start from the duty, then the interface to the rest of the machine or the room, then the document that proves the claim. A lower price that leaves one of those blank is a different product.

Machined Part is easy to confuse with Steel Sheet. If the quote could be read as either, add the line that separates them: the rating, the fitment, or the standard named below. Link the drawing number to that line so receiving inspection can reject the wrong one.

Numbers that change the quote

Line What to write for Machined Part
Dimensions Thickness, width, length, and tolerance.
Surface Mill finish, coated, or a stated roughness.
Certificate A mill certificate of the type the job requires, such as an EN 10204 type if that is what you need.
Quantity Weight or pieces, and the bundle.
Alloy The grade designation, not only steel or aluminum.
Temper or condition Temper, hardness, or heat-treat condition.

How to compare two offers

Lay both quotes for Machined Part on one sheet and line up dimensions, surface, and certificate. If a cell is empty, the offer is not finished. Ask for the missing line in writing. When those match, the honest difference is lead time, the test evidence, and who carries the warranty. Do not average a fully specified Machined Part with a cheaper line that omitted dimensions.

Documents worth having before the deposit

Ask for the certificate type with the grade. The file should name Machined Part and the revision, not only the supplier’s homepage. A factory quality certificate such as ISO 9001 can sit beside that file. It does not replace it.

Failures that show up after delivery

  • Ordering stainless without the alloy.
  • Leaving temper off a sheet that will be formed.
  • Accepting a trader’s stamp in place of a mill certificate.

On a Machined Part, the expensive version of the first mistake is discovering it after the goods are in the crate. Put the rejection condition in the purchase order while the supplier can still restate the offer.

A worked RFQ line

Use this shape, then replace the brackets with your duty: “Machined Part — State alloy, temper, dimensions, surface, and certificate type.” That sentence is a template, not a rating of any brand. If a supplier’s datasheet uses different units, convert them onto this sheet so the next offer can be compared.

Where words like RoHS / CE belong

Searches often add a constraint to Machined Part: RoHS / CE, or IP67. Keep those on this page. RoHS is a material limit. CE is a declaration that lists the rules relied on. Ask for the document that names this part number and revision. IP67 is dust-tight plus a defined temporary immersion. It is not a rating for living underwater, and it says nothing about sunlight or salt. If you need a third constraint, add it as another line on the same drawing. A second URL that only swaps the adjective does not give a buyer a second fact.

Related in this section: how to specify Steel Sheet.

Questions buyers actually ask

What should an RFQ for Machined Part include?

State alloy, temper, dimensions, surface, and certificate type.

Is a cheaper Machined Part the same part?

Only if dimensions, surface, and the documents match. A missing line is a different offer.

Do waterproof, OEM, or IP words need their own page?

No. For Machined Part they are extra lines on this specification. Ask for the test or the drawing that gives the word a value.