Machine Processing and Tolerance Grades

Relation of machine processes to tolerance grades

Machining processes that under normal conditions will produce work within the tolerances indicated.

Tolerance Grades
45678910111213
Lapping and Honing
Cylindrical Grinding
Surface Grinding
Diamond Turning
Diamond Boring
Broaching
Reaming
Turning
Boring
Milling
Planning and Shaping
Drilling

ANSI B4.1 Standard Tolerances are indicated in the diagram below:

ANSI B4.1 Standard Tolerances

  • 1 in (inch) = 25.4 mm

Related Topics

  • Miscellaneous - Miscellaneous engineering related topics like Beaufort Wind Scale, CE-marking, drawing standards and more

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