Limits and Fits Options

Limits and Fits options allow you to set the defaults used when applying the Limits and Fits tolerance type.

System of Fits	Sets the fixed datum used to calculate the tolerances. This can be either Hole Basis (shaft is assembled into the hole) or Shaft Basis (hole is assembled onto the shaft).
Hole Tolerance class	Fundamental deviation: Fundamental Deviation establishes the location of the tolerance zone with respect to the Basic Size. When System of Fits is set to Hole Basis, this will be "H". When System of Fits is set to Shaft Basis, this can be any of the allowed letter designations (A thru ZC) International tolerance grade: Any of the allowed numeric designations (IT01 thru IT18) These properties can also be set by selecting in the Hole-Basis and Shaft-Basis Preferred Fits tables.
Shaft tolerance class	Fundamental deviation: Fundamental Deviation establishes the location of the tolerance zone with respect to the Basic Size. When System of Fits is set to Hole Basis, this will be any of the allowed letter designations (a thru zc). When System of Fits is set to Shaft Basis, this will be "h". International tolerance grade: Any of the allowed numeric designations (IT01 thru IT18) These properties can also be set by selecting in the Hole-Basis and Shaft-Basis Preferred Fits tables.
Method of designation	The display format for the tolerance. Each method is illustrated below.
	40H8
	40H8 (40.039/40)
	40.039/40 (40H8)
	40.039/40
	40H8/h7