Custom parts
A repeat part should repeat the accepted specification—not an approximate description of an earlier order.
Keep the accepted files
Retain the STEP or DXF, drawing, material selection, and quote scope used for the accepted part. Use a revision identifier in filenames and the drawing title block. Store an order reference alongside the package so later changes can be distinguished from a reorder.
Decide whether the design changed
A hole relocation, new tolerance, alternate material, or coating change creates a different manufacturing requirement. Update the revision and make model and drawing agree. A filename ending in “final-new” is less useful than a consistent revision convention.
Recheck interfaces and environment
A replacement that must fit an installed assembly should reference the actual mating requirements. If the surrounding assembly changed, an exact copy of the old part may no longer be correct. Also consider whether wear, temperature, or field use exposed a weakness in the original design.
Set the new quantity deliberately
Batch economics and material availability can change. An old unit price or lead time is not automatically a new commitment. Use the current online route for supported quantities or a custom RFQ for larger batches and special scope, carrying forward the controlled specification.