AnnexAnnex.T.07

Form tolerances and deviations (extract from STAS 7391)

Roundness () and cylindricity () tolerances

Nominal size [mm]	Tolerance grade
	1	2	3	4	5	6	7	8	9	10	11	12
	Tolerance values [μm]
Up to 3	0.3	0.5	0.8	1.2	2	3	5	8	12	20	30	50
Over 3 up to 6	0.4	0.6	1	1.6	2.5	4	6	10	16	25	40	60
Over 6 up to 18	0.5	0.8	1.2	2	3	5	8	12	20	30	50	80
Over 18 up to 50	0.6	1	1.6	2.5	4	6	10	16	25	40	60	100
Over 50 up to 120	0.8	1.2	2	3	5	8	12	20	30	50	80	120
Over 120 up to 200	1	1.6	2.5	4	6	10	16	25	40	60	100	160
Over 200 up to 500	1.2	2	3	5	8	12	20	30	50	80	120	200
Over 500 up to 800	1.6	2.5	4	6	10	16	25	40	60	100	160	250
Over 800 up to 1250	2	3	5	8	12	20	30	50	80	120	200	300
Over 1250 up to 2000	2.5	4	6	10	16	25	40	60	100	160	250	400

Straightness (), flatness () and profile of a line or surface () tolerances

Nominal size [mm]	Tolerance grade
	1	2	3	4	5	6	7	8	9	10	11	12
	Tolerance values [μm]
Up to 10	0.25	0.4	0.6	1	1.6	2.5	4	6	10	16	25	40
Over 10 up to 16	0.3	0.5	0.8	1.2	2	3	5	8	12	20	30	50
Over 16 up to 25	0.4	0.6	1	1.6	2.5	4	6	10	16	25	40	60
Over 25 up to 40	0.5	0.8	1.2	2	3	5	8	12	20	30	50	80
Over 40 up to 63	0.6	1	1.6	2.5	4	6	10	16	25	40	60	100
Over 63 up to 100	0.8	1.2	2	3	5	8	12	20	30	50	80	120
Over 100 up to 160	1	1.6	2.5	4	6	10	16	25	40	60	100	160
Over 160 up to 250	1.2	2	3	5	8	12	20	30	50	80	120	200
Over 250 up to 400	1.6	2.5	4	6	10	16	25	40	60	100	160	250
Over 400 up to 630	2	3	5	8	12	20	30	50	80	120	200	300
Over 630 up to 1000	2.5	4	6	10	16	25	40	60	100	160	250	400