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Nominal pitch diameter

Relative position of tolerance sections to zero

4HX

4H

4H

6H

6HX

6H

6G

6GX

6G

7G

7GX

7G

Pitch diameter tolerance section of the produced

thread within which a no go plug gauge can be

screwed into the produced thread

Pitch diameter tolerance section of the produced

thread within which a go plug gauge can be screwed

into the produced thread

Acceptable pitch diameter tolerance section of the

thread to be produced

Acceptable pitch diameter tolerance section of a tap

produced according to DIN EN norm

Acceptable pitch diameter tolerance section of a tap

produced according to internal standardization

Tolerance Levels

Schematic description of production tolerances applicable for metric internal thread –

in addition please also find below the specific tolerance fields for tap production.

8.4