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CNC machining RFQ checklist: what to send for a quote

Prepare a CNC machining RFQ with drawings, material grades, quantities, tolerances, finishes and inspection requirements.

A useful quote starts with the drawing revision and the requirements that affect how the part is made. Include the following information when you request CNC machining.

Send the model and the drawing together

Include a STEP model where available and a PDF drawing with the same revision. Mark units, datums, threads, fits and critical dimensions. If the model and drawing differ, tell us which is authoritative.

Specify the material grade and quantity

Name the alloy or plastic grade, required condition and any material certificate requirements. Separate the prototype quantity from expected repeat orders. Ask for quantity breaks if you are comparing batch sizes.

Identify the features that control function

Call out mating fits, sealing faces, concentricity and surface texture where they matter. Explain whether dimensions apply before or after finishing. For a shaft with tight bearing journals, discuss precision grinding as part of the manufacturing route. For small turned parts, ask whether Swiss machining suits the geometry and quantity.

Include finishing and inspection requirements

Specify coating type, color, thickness and masking where applicable. Tell us whether you need first-article approval, a dimensional report, material certificates or other records. Agree the inspection scope in the quote instead of assuming every document is included.

Give the delivery and packaging requirements

Include the destination, required delivery date and any split shipment requirements. Identify surfaces that need protection and whether parts require individual packaging or labels.

Copy this checklist into your enquiry

  • Part number and drawing revision
  • CAD model and PDF drawing
  • Material grade and condition
  • Prototype quantity and repeat-order quantities
  • Critical dimensions, fits and surface texture
  • Finish, masking and dimensions after finishing
  • Inspection, certificates and approval requirements
  • Delivery destination, date and packaging

If your drawing is not ready, start with the material, approximate dimensions, quantity and the feature you are most concerned about. We can identify what else is needed to review the part.

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