Ordering screws and fasteners: thread, strength grade, finish and drawing
https://fly-supply.net/en/guides/fastener-ordering-specification

Your enquiry checklist
[ ] Controlling full P/N, standard and drawing revision
[ ] Thread system, diameter and pitch/TPI
[ ] Length convention, head/drive and thread/grip details
[ ] Required material, strength class and finish
[ ] Quantity with explicit pieces/pack units and allowed alternatives
[ ] Drawing, traceability/certificate requirements and required date

Use this guide to prepare a request. Exact suitability, installation eligibility, applicable documentation and service scope are confirmed for the specific equipment and application.