Size, dimensional and tolerance data given is for Type A Plain Flat Washers, ANSI/ASME B18.22.1 Type A plain washers designated by their nominal dimensions. The Type B plain washers come in narrow, regular and wide series with proportions designed to distribute the load over larger areas of lower strength materials. ISO 286 Table Shaft Tolerances Calculator; ISO 286 Table Hole Tolerances Calculator; International Tolerance Grades; Variations on dimensions without tolerance values are according to ' ISO 2768'. All tolerance limits are given in mm. ISO 2768 and derivative geometrical tolerance standards are intendedto simplify drawing specifications for. For standard pipe, except as provided for thin-wall pipe, the tolerances of diameter shall be in accordance with the following table: For pipe over 10 inch as special OD tolerance pipe, the OD shall within vary +1% /-1%. Permissible Variations in Outside Diameter.

Shaft tolerance table (iso) ≥ ＜ b10 c9 d8 e7 e8 f7 g7 h6 h7 h8 js7 k7 m7 n7 p7 r7 s7 t7 - 3 +180 +140 +85 +60 +34 +20 +24 +14 +28 +14 +16 +6 +12 +2 +6 0 +10 0 +14 0 ±5 0-10-2-12-4-14-6-16-10-20-14-24-3 6 +188 +140 +100 +70 +48 +30 +32 +20 +38 +20 +22 +10 +16 +4 +8 0 +12 0 +18 0 ±6 +3-9 0-12-4-16-8-20-11-23-15-27-6 10.

What is ISO 2768?
ISO 2768 and derivative geometrical tolerance standards ISO 2768–mk and ISO 2768–fh are intended to simplify drawing specifications for mechanical tolerances. ISO 2768 is mainly for parts that are manufactured by way of machining or removal of materials. Variations on dimensions without tolerance values are according to ISO 2768, all tolerance limits are given in mm.

International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.

General tolerance ISO 2768 does not specify where to use these tolerances. Tolerance class is defined as per design requirements and manufacturing capability. For example : for sheet metal parts ISO 2768–mk is used. And for machined components ISO 2768–fh can be used.

ISO 2768-2 : 1989, General tolerances — Part 2:

Geometrical tolerances for features without individual tolerance indications.

ISO 8015 : 1985

Technical drawings — Fundamental tolerancing principle.

Variations on dimensions without tolerance values are according to ” ISO 2768″. All tolerance limits are given in mm.

ISO 2768 and derivative geometrical tolerance standards are intended to simplify drawing specifications for mechanical tolerances. ISO 2768 is mainly for parts that are manufactured by way of machining or removal of materials.

Linear Dimensions

Permissible deviations in mm for ranges in nominal lengths	f (fine)	Tolerance class designation (description)		v (very coarse)
	f (fine)	m (medium)	c (coarse)	v (very coarse)
0.5 up to 3	±0.05	±0.1	±0.2	–
over 3 up to 6	±0.05	±0.1	±0.3	±0.5
over 6 up to 30	±0.1	±0.2	±0.5	±1.0
over 30 up to 120	±0.15	±0.3	±0.8	±1.5
over 120 up to 400	±0.2	±0.5	±1.2	±2.5
over 400 up to 1000	±0.3	±0.8	±2.0	±4.0
over 1000 up to 2000	±0.5	±1.2	±3.0	±6.0
over 2000 up to 4000	–	±2.0	±4.0	±8.0

External Radius and Chamfer Heights

Permissible deviations in mm for ranges in nominal lengths	f (fine)	Tolerance class designation (description)		v (very coarse)
	f (fine)	m (middle)	c (coarse)	v (very coarse)
0.5 up to 3	±0.2	±0.2	±0.4	±0.4
over 3 up to 6	±0.5	±0.5	±1.0	±1.0
over 6	±1.0	±1.0	±2.0	±2.0

Angular Dimensions

Permissible deviations in degrees and minutes for ranges in nominal lengths	f (fine)	Tolerance class designation (description)		v (very coarse)
	f (fine)	m (middle)	c (coarse)	v (very coarse)
up to 10	±1º	±1º	±1º30′	±3º
over 10 up to 50	±0º30′	±0º30′	±1º	±2º
over 50 up to 120	±0º20′	±0º20′	±0º30′	±1º
over 120 up to 400	±0º10′

Tolerance Table In Inch