chapter  32
Limits and Fits
Pages 8

However, it has been found for normal manufacturing processes that the range can be condensed to a small number of tolerance combinations.

The most commonly applied hole and shaft tolerances include: Selected hole tolerances: H7, H8, H9, and H11 Selected shaft tolerances: c11, d10, e9, f7, g6, h6, k6, n6 p6, s6 and u6 The general standard adopted is the basic hole; the measurement of holes is generally

controlled using plug gauges with “go no go” features, whereas a shaft is easily checked using micrometers or gap gauges.