Nominal Dimensions of Standard Sieves

Sieve opening (mm)	USA standard ASTM E 11-61	Mesh number Tyler (mesh/in.)	British standard (mesh/in.)
0.037	400	400	—
0.044	325	325	—
0.045	—	—	350
0.053	270	270	300
0.063	230	250	240
0.074	200	200	—
0.075	—	—	200
0.088	170	170	—
0.090	—	—	170
0.105	140	150	150
0.125	120	115	120
0.149	100	100	—
0.150	—	—	100
0.177	80	80	—
0.180	—	—	85
0.210	70	65	72
0.250	60	60	60
0.297	50	48	—
0.300	—	—	52
0.354	45	42	—
0.355	—	—	44
0.420	40	35	35
0.500	35	32	30
0.595	30	28	—
0.600	—	—	25
0.707	25	24	—
0.710	—	—	22
0.841	20	20	—
1.00	18	16	16
1.19	16	14	—
1.20	—	—	14
1.41	14	12	—
1.68	12	10	10
2.00	10	9	8