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METRIC
INCH
STANDARD
NOMINAL SIZE
STANDARD
(MM)
I.D.
O.D.
C.S.
I.D.
±
I.D.
±
MS 28775
MS 29513
AN 6227B MS 29561 AN 123856
1
AND
MS 9021
TO
AN 6230B MS 9068 AN 123934
NAS 1593
NAS 1594
AS-568A
NAS 1611
UNIVERSAL
DASH
PART
DASH
PART
NUMBERS NUMBERS NUMBERS NUMBERS
Standard O-Ring Sizes and Dimensions
-004 to -050 Cross Section Diameters = .070 ± .003 inches — 1.78 ± 0.08 millimeters.
1 For AN 123956 to AN 124034, add 100 to part numbers shown in this column.
* These dash numbers are not included in MS 28775, MS 29561 or NAS 1611 series.
** These dash numbers are not included in MS 9068, MS 29561, NAS 1593 or NAS 1594 series.
-003 = .060 ± .003 in.
= 1.52 ± .08 mm.
-001 = .040 ± .003 in.
= 1.02 ± .08 mm.
★
Cross Section Diameter:
-002 = .050 ± .003 in.
= 1.27 ± .08 mm.
★
★
★
-001
-001**
1/32
x 3/32
x1/32
.029
.004
0.74
0.10
-002
-002**
3/64
x 9/64
x1/32
.042
.004
1.07
0.10
-003
-003**
1/16
x 3/16
x1/16
.056
.004
1.42
0.10
-004
-004
5/64
x 13/64
x1/16
.070
.005
1.78
0.13
-005
-005
3/32
x 7/32
x1/16
.101
.005
2.57
0.13
-006
AN 6227B-1
-006
AN 123856 1/8
x 1/4
x1/16
.114
.005
2.90
0.13
-007
AN 6227B-2
-007
AN 123857 5/32
x 9/32
x1/16
.145
.005
3.68
0.13
-008
AN 6227B-3
-008
AN 123858 3/16
x 5/16
x1/16
.176
.005
4.47
0.13
-009
AN 6227B-4
-009
AN 123859 7/32
x 11/32
x1/16
.208
.005
5.28
0.13
-010
AN 6227B-5
-010
AN 123860 1/4
x 3/8
x1/16
.239
.005
6.07
0.13
-011
AN 6227B-6
-011
AN 123861 5/16
x 7/16
x1/16
.301
.005
7.65
0.13
-012
AN 6227B-7
-012
AN 123862 3/8
x 1/2
x1/16
.364
.005
9.25
0.13
-013
-013
7/16
x 9/16
x1/16
.426
.005 10.82
0.13
-014
-014
1/2
x 5/8
x1/16
.489
.005 12.42
0.13
-015
-015
9/16
x 11/16
x1/16
.551
.007 14.00
0.18
-016
-016
5/8
x 3/4
x1/16
.614
.009 15.60
0.23
-017
-017
11/16 x 13/16
x1/16
.676
.009 17.17
0.23
-018
-018
3/4
x 7/8
x1/16
.739
.009 18.77
0.23
-019
-019
13/16 x 15/16
x1/16
.801
.009 20.35
0.23
-020
-020
7/8
x 1
x1/16
.864
.009 21.95
0.23
-021
-021
15/16 x1-1/16
x1/16
.926
.009 23.52
0.23
-022
-022
1
x1-1/8
x1/16
.989
.010 25.12
0.25
-023
-023
1-1/16 x1-3/16
x1/16 1.051
.010 26.70
0.25
-024
-024
1-1/8
x1-1/4
x1/16 1.114
.010 28.30
0.25
-025
-025
1-3/16 x1-5/16
x1/16 1.176
.011 29.87
0.28
-026
-026
1-1/4
x1-3/8
x1/16 1.239
.011 31.47
0.28
-027
-027
1-5/16 x1-7/16
x1/16 1.301
.011 33.05
0.28
-028
-028
1-3/8
x1-1/2
x1/16 1.364
.013 34.65
0.33
-029
-029*
1-1/2
x1-5/8
x1/16 1.489
.013 37.82
0.33
-030
-030*
1-5/8
x1-3/4
x1/16 1.614
.013 41.00
0.33
-031
-031*
1-3/4
x1-7/8
x1/16 1.739
.015 44.17
0.38
-032
-032*
1-7/8
x 2
x1/16 1.864
.015 47.35
0.38
-033
-033*
2
x2-1/8
x1/16 1.989
.018 50.52
0.46
-034
-034*
2-1/8
x2-1/4
x1/16 2.114
.018 53.70
0.46
-035
-035*
2-1/4
x2-3/8
x1/16 2.239
.018 56.87
0.46
-036
-036*
2-3/8
x2-1/2
x1/16 2.364
.018 60.05
0.46
-037
-037*
2-1/2
x2-5/8
x1/16 2.489
.018 63.22
0.46
-038
-038*
2-5/8
x2-3/4
x1/16 2.614
.020 66.40
0.51
-039
-039*
2-3/4
x2-7/8
x1/16 2.739
.020 69.57
0.51
-040
-040*
2-7/8
x 3
x1/16 2.864
.020 72.75
0.51
-041
-041*
3
x3-1/8
x1/16 2.989
.024 75.92
0.61
-042
-042*
3-1/4
x3-3/8
x1/16 3.239
.024 82.27
0.61
-043
-043*
3-1/2
x3-5/8
x1/16 3.489
.024 88.62
0.61
-044
-044*
3-3/4
x3-7/8
x1/16 3.739
.027 94.97
0.69
-045
-045*
4
x4-1/8
x1/16 3.989
.027 101.32
0.69
NOTES: (1) “AN”, “MS”, and “NAS” information is for size cross-reference only. “AN”, “MS”, and “NAS” O-Rings require special compounds. APG O-Rings are available in a variety of
compounds.
(2) Actual dimensions for standard (AN) shrinkage materials only. These correspond to AS568A dimensions. O-Rings manufactured out of compounds with different shrinkage
rates (other than AN) will produce slightly different dimensions and tolerances.
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