hexagon logo

Zero Position - No Material Modifier - Sortof

Is this a 'legal' callout? We have 4 holes thru the face of a cylindrical part. You know the drill - I can't include the actual print. If need be, I can mock something up.
Datum A = OD, Datum B = Top plane of cylinder, Datum C = 1 of the 4 holes. Should there not be a material modifier here on the position tolerance itself?? Or is the effect the same b/c Datum C is one of the 4 holes?

I'll contact our customer...but they won't likely respond for a month or two...

Parents Reply Children
  • I'm going to agree with Neil here, and ask the customer if those bolt circles are individual or all 4 as a pattern. This definitely needs clarification. I can't find the print my company had with a similar Position of 0 with a material modifier on the datum sadly to see what engineering said about it.