U.S. Sieves and Tyler Equivalent

Wire Cloth Specifications

Mesh	Sieve Opening		Nominal Wire Diameter		Tyler Screen Scale
Mesh	(Millimiters)	Approx. Equivalents (Inches)	(Millimiters)	Approx. Equivalents (Inches)	Equivalent Designation

5	125.0	5.00	8.00	0.315	---
4.24	106.0	4.24	6.40	0.2520	---
4	100.0	4.00	6.30	0.2480	---
3 1/2	90.0	3.50	6.08	0.2394	---
3	75.0	3.00	5.80	0.2283	---
2 1/2	63.0	2.50	5.50	0.2165	---
2 1/2	53.0	2.12	5.15	0.2028	---
2	50.0	2.00	5.05	0.1988	---

1 3/4	45.0	1.75	4.85	0.1909	---
1 1/2	37.5	1.50	4.59	0.1807	---
1 1/4	31.5	1.25	4.23	0.1665	---
1.06	26.5	1.06	3.90	0.1535	1.050
1	25.0	1.00	3.80	0.1496	---

7/8	22.4	0.875	3.50	0.1378	0.883
3/4	19.0	0.750	3.30	0.1299	0.742
5/8	16.0	0.625	3.00	0.1181	0.624
0.530	13.2	0.530	2.75	0.1083	0.525
1/2	12.5	0.500	2.67	0.1051	---

7/16	11.2	0.438	2.45	0.0965	0.441
3/8	9.50	0.375	2.27	0.0894	0.371
5/16	8.00	0.312	2.07	0.0815	2 1/2
0.265	6.70	0.265	1.87	0.0736	3
1/4	6.30	0.250	1.82	0.0717	---

N° 3 1/2	5.60	0.223	1.68	0.0661	3 1/2
N° 4	4.75	0.187	1.54	0.0606	4
N° 5	4.00	0.157	1.37	0.0539	5
N° 6	3.35	0.132	1.23	0.0484	6

N° 7	2.80	0.1110	1.10	0.043	7
N° 8	2.36	0.0937	1.00	0.0394	8
N° 10	2.00	0.0787	0.90	0.0354	9
N° 12	1.70	0.0661	0.81	0.0319	10

N° 14	1.40	0.0555	0.725	0.0285	12
N° 16	1.18	0.0469	0.650	0.0256	14
N° 18	1.00	0.0394	0.580	0.0228	16
N° 20	0.85	0.0331	0.510	0.0201	20

N° 25	0.710	0.0278	0.450	0.0177	24
N° 30	0.600	0.0234	0.390	0.0154	28
N° 35	0.500	0.0197	0.340	0.0134	32
N° 40	0.425	0.0165	0.290	0.0114	35

N° 45	0.355	0.0139	0.247	0.0097	42
N° 50	0.300	0.0117	0.215	0.0085	48
N° 60	0.250	0.0098	0.180	0.0071	60
N° 70	0.212	0.0083	0.152	0.0060	65

N° 80	0.180	0.0070	0.131	0.0052	80
N° 100	0.150	0.0059	0.110	0.0043	100
N° 120	0.125	0.0049	0.091	0.0036	115
N° 140	0.106	0.0041	0.076	0.003	150

N° 170	0.090	0.0035	0.0064	0.0025	170
N° 200	0.075	0.0029	0.0053	0.0021	200
N° 230	0.063	0.0025	0.0044	0.0017	250
N° 270	0.053	0.0021	0.0037	0.0015	270

N° 325	0.045	0.0017	0.030	0.0012	325
N° 400	0.038	0.0015	0.025	0.0010	400

N° 450	0.032	0.00126	0.0110	---	---
N° 500	0.025	0.00098	0.0010	---	---
N° 635	0.020	0.00079	0.0008	---	---