1.Accuracy grade
Accuracy grade: refers to the maximum allowable difference between the actual and the nominal values of a part or size.
2.Spherical tolerance
Spherical tolerance: refers to the allowable gap between a part and its ideal spherical shape.
3.Flatness tolerance
Flatness tolerance: refers to the allowable gap between a part and its ideal flat surface.
4.Taper tolerance
Taper tolerance: refers to the allowable gap between a part and its ideal tapered shape.
5.Angular tolerance
Angular tolerance: refers to the allowable gap between a part and its ideal angular shape.
6.Position tolerance
Position tolerance: refers to the allowable gap between a part and its ideal centered position.
7.Rotation tolerance
Rotation tolerance: refers to the allowable gap between a part and its ideal rotational position.
8.Straightness tolerance
Straightness tolerance: refers to the allowable circular shape variation of a part along its axis.
9.Perpendicularity tolerance
Perpendicularity tolerance: refers to the allowable variation between a part and its ideal perpendicular direction.
10.Parallelism tolerance
Parallelism tolerance: refers to the allowable variation between a part and its ideal parallel direction.
11.Cylindricity tolerance
Cylindricity tolerance: refers to the allowable circular shape variation of a part along a given axis.
12.Roundness tolerance
Roundness tolerance: refers to the allowable variation between a part and its ideal circular shape.
13.Runout tolerance
Runout tolerance: refers to the allowable variation between a part and its ideal runout position.
14.Surface roughness
Surface roughness: refers to the allowable variation between a part and its ideal smooth surface.
15.Weld dimension and tolerance
Weld dimension and tolerance: refers to the allowable gap between a weld and its ideal shape and size.