Check List for Part Drawings
_____ | Is a premium material necessary or desirable? If so, is it specified by grade, hardness and size? Can a standard stock size be used? |
_____ | If a material specification is not critical, does the drawing define the broad limits, or are acceptable substitutions indicated? |
_____ | Is a mill certificate sufficient for material analysis, or is laboratory testing required? Is the test method fully detailed? |
_____ | Do all tolerances appear on the drawing? Are they practical and consistent with function of the part? |
_____ | Do all dimensions add up correctly? Do overlapping dimensions eliminate tolerances? |
_____ | If concentricity is required, is it clearly shown? Is allowable eccentricity set at practical limits? Is it as “open” as possible? |
_____ | Is heat treating required? If so, does the drawing include the heat treating specification? |
_____ | If plating is required, are finish and thickness tolerances specified? Is the plated dimension consistent with the unplated dimension? |
_____ | Are all surface finish specifications and measurements clearly stated? |
_____ | Can minor collet or pusher marks be tolerated? Are burrs permissible? |
_____ | If the part mates with another, is this noted on the drawing? Are the mating surfaces noted? |
_____ | Are Acceptable Quality Level requirements defined clearly? |