![]() K refers to general geometric tolerances, but position is not amongst them, as CheckerHater noted. The drawing statement should be: 'TOLERANCES ARE PER: DIN ISO 2678-fK'. Or am I missing something? RE: ISO 2768 Postion Tolerance Question (Mechanical) 12 Jun 13 11:45. So, if I have a plate with 7mm holes located 1300mm apart from each other, is the tolerance range the feature size (7 mm) or the distance between features (1300mm). These form tolerances have specified values for ranges of size, ie 'up to 10mm', '10 - 30mm' etc. Does anyone here know if ISO 2768 tolerances are to be treated as cumulative or are they non-cumulative (as say, a basic profile without datum references). ISO 2768-1: General tolerances for linear and angular dimensions. Hint: For hole tolerances, tolerance zones H7, H8, H9 and H11 are used. As I understand it, the F refers to Class f (fine) linear and angular dimensions and the K refers to form, such as position, flatness, perpendicularity, etc. ![]() I'm looking at a drawing that has the statement 'TOLERANCES ARE PER: DIN ISO 2678-FK'.
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