Ceramic Bearings -
Inch/Metric Conversion Chart
Fraction
Inch
mm
Fraction
Inch
mm
Fraction
Inch
mm
1/64
0.0156
0.3969
19/64
0.2969
7.5406
0.7087
18.0000
0.0250
0.5350
5/16
0.3125
7.9375
23/32
0.7187
18.2562
1/32
0.3120
0.7937
0.3150
8.0000
47/64
0.7344
18.6532
0.0394
1.0000
21/64
0.3281
8.3344
0.7435
18.8849
0.0400
1.0160
11/32
0.3477
8.7312
0.7480
10.0000
3/64
0.0469
1.1906
0.3543
9.0000
3/4
0.7500
19.0500
0.0472
1.2000
23/64
0.3594
9.1281
49/64
0.7656
19.4469
0.0550
1.3970
3/8
0.3750
9.5250
0.7717
19.6012
0.0591
1.5000
25/64
0.3906
9.9213
25/32
0.7812
19.8433
1/16
0.0625
1.5875
0.3937
10.0000
0.7874
20.0000
0.0709
1.8000
13/32
0.4062
10.3187
51/64
0.7969
20.2402
5/64
0.0781
1.9844
0.4100
10.4140
13/16
0.8125
20.6375
0.0787
2.0000
27/64
0.4219
10.7156
0.8268
21.0000
0.0906
2.3012
0.4250
10.7950
53/64
0.8281
21.0304
3/32
0.0937
2.3812
0.4331
11.0000
27/32
0.8437
21.4312
0.0984
2.5000
7/16
0.4375
11.1125
55/64
0.8594
21.8281
0.1000
2.5400
29/64
0.4531
11.50.94
0.8661
22.0000
0.1024
2.6000
0.4600
11.6840
7/8
0.8750
22.2250
7/64
0.1094
2.7781
15/32
0.4687
11.9062
57/84
0.8906
22.6219
0.1100
2.7940
0.4724
12.0000
0.9055
23.0000
0.1102
2.8000
31/64
0.4844
12.4031
29/32
0.9062
23.0167
0.1181
3.0000
1/2
0.5000
12.7000
59/64
0.9219
23.4156
1/8
0.1250
3.1750
0.5118
13.0000
15/16
0.9219
23.5156
0.1256
3.1902
33/64
0.5156
13.0968
0.9449
24.0000
0.1378
3.5000
17/32
0.5312
13.4937
61/64
0.9531
24.2094
9/64
0.1406
3.5719
35/64
0.5469
13.8906
31/32
0.9687
24.6062
5/32
0.1562
3.9687
0.5512
14.0000
0.9843
25.0000
0.1575
4.0000
9/16
0.5625
14.2875
63/64
0.9844
25.0031
11/64
0.1719
4.3656
37/64
0.5781
14.6844
1
1.0000
25.4000
3/16
0.1875
4.7625
0.5906
15.0000
1.0236
26.0000
0.1862
4.8057
19/32
0.5937
15.0812
1.0415
26.4541
0.1969
5.0000
39/64
0.6094
15.4781
1.0480
26.6192
13/64
0.2031
5.1594
5/8
0.6250
15.8750
1-1/16
1.0625
26.9875
0.2165
5.4991
0.6299
16.0000
1.0630
27.0000
7/32
0.2187
5.5562
41/64
0.6406
16.2719
1.1025
28.0000
15/64
0.2344
5.9531
0.6500
16.5100
1-1/8
1.1250
28.5750
0.2362
6.0000
21/32
0.6562
16.6687
1.1417
29.0000
1/4
0.2500
6.3500
0.6620
16.8148
1.1812
30.0000
17/64
0.2656
6.7469
0.6693
17.0000
1-3/16
1.1875
30.1525
0.2756
7.0000
43/64
0.6719
17.0656
1-1/4
1.2500
31.7500
9/32
0.2812
7.1437
11/16
0.6875
17.4625
1-3/8
1.3750
34.9250
0.2883
7.3228
45/54
0.7031
17.8594
1-1/2
1.5000
38.1000
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Ceramic Bearings - Division of Impact Bearings - Toll Free: 800-970-2007
