What Are Tolerances on Dimensions with Deviations in DIN 16901?

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SUMMARY

The discussion centers on the interpretation of tolerances as specified in DIN 16901 and DIN 16091. Users clarified that tolerances listed without +/- symbols in the second half of the DIN 16091 table are indeed positive, effectively doubling the values from the first half. The term "tolerances on dimensions with deviations entered against the dimensions" refers to specific tolerances applied to dimensions that deviate from standard measurements, which can be critical for ensuring precision in manufacturing processes.

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patehi
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Hi all,

i have stumbled across a drawing which referenced DIN 16901 for its tolerance. I have a table of DIN 16091 which i don't understand.

For the first half of the tables, the tolerances are + and -, which i understand. The second half (tolerances on dimensions with Deviations entered against the dimensions) are without +/- symbols. Can i assume that the tolerances are always + ?

DIN16091_tolerance.jpg


Thanks guys for your help!
 

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It looks like the second set of numbers are just twice the top set for the given row/col

so if the cell says +-0.20 then the corresponding cell says 0.40
 
it Looks like it as well, but what are "tolerances on dimensions with deviations entered against the dimensions"?
I am inspecting a sampe, and have a drawing and the dimensions are with no tolerances. The only indication is in the remark section, "tolerances are according to DIN 16901".
 

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