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Flat
Washer Size Dimension Chart
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Hardware
ANSI Menu | Products
and Service Directory

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NOMINAL SIZE
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SERIES
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A Inside Diameter
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B Outside Diameter
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C Thickness
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| NO.0
| NARROW
| 0.0680
| 0.1250
| 0.0250
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| NO.0
| REGULAR
| 0.0680
| 0.1880
| 0.0250
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| NO.0
| WIDE
| 0.0680
| 0.2500
| 0.0250
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| NO.1
| NARROW
| 0.0840
| 0.1560
| 0.0250
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| NO.1
| REGULAR
| 0.0840
| 0.2190
| 0.0250
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| NO.1
| WIDE
| 0.0840
| 0.2810
| 0.0320
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| NO.2
| NARROW
| 0.0940
| 0.1880
| 0.0250
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| NO.2
| REGULAR
| 0.0940
| 0.2500
| 0.0320
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| NO.2
| WIDE
| 0.0940
| 0.3440
| 0.0320
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| NO.3
| NARROW
| 0.1090
| 0.2190
| 0.0250
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| NO.3
| REGULAR
| 0.1090
| 0.3120
| 0.0320
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| NO.3
| WIDE
| 0.1090
| 0.4060
| 0.0400
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| NO.4
| NARROW
| 0.1250
| 0.2500
| 0.0320
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| NO.4
| REGULAR
| 0.1250
| 0.3750
| 0.0400
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| NO.5
| NARROW
| 0.1410
| 0.2810
| 0.0320
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| NO.5
| REGULAR
| 0.1410
| 0.4060
| 0.0400
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| NO.5
| WIDE
| 0.1410
| 0.5000
| 0.0400
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| NO.6
| NARROW
| 0.1560
| 0.3120
| 0.0320
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| NO.6
| REGULAR
| 0.1560
| 0.4380
| 0.0400
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| NO.6
| WIDE
| 0.1560
| 0.5620
| 0.0400
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| NO.8
| NARROW
| 0.1880
| 0.3750
| 0.0400
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| NO.8
| REGULAR
| 0.1880
| 0.5000
| 0.0400
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| NO.8
| WIDE
| 0.1880
| 0.6250
| 0.0630
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| NO.10
| NARROW
| 0.2030
| 0.4060
| 0.0400
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| NO.10
| REGULAR
| 0.2030
| 0.5620
| 0.0400
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| NO.10
| WIDE
| 0.2030
| 0.7340
| 0.0630
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| NO.12
| NARROW
| 0.2340
| 0.4380
| 0.0400
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| NO.12
| REGULAR
| 0.2340
| 0.6250
| 0.0630
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| NO.12
| WIDE
| 0.2340
| 0.8750
| 0.0630
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| .25
| NARROW
| 0.2810
| 0.5000
| 0.0630
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| .25
| REGULAR
| 0.2810
| 0.7340
| 0.0630
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| .25
| WIDE
| 0.2810
| 1.0000
| 0.0630
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| .3125
| NARROW
| 0.3440
| 0.6250
| 0.0630
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| .3125
| REGULAR
| 0.3440
| 0.8750
| 0.0630
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| .3125
| WIDE
| 0.3440
| 1.1250
| 0.0630
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| .375
| NARROW
| 0.4060
| 0.7340
| 0.0630
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| .375
| REGULAR
| 0.4060
| 1.0000
| 0.0630
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| .375
| WIDE
| 0.4060
| 1.2500
| 0.1000
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| .4375
| NARROW
| 0.4690
| 0.8750
| 0.0630
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| .4375
| REGULAR
| 0.4690
| 1.1250
| 0.0630
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| .4375
| WIDE
| 0.4690
| 1.4690
| 0.1000
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| .5
| NARROW
| 0.5310
| 1.0000
| 0.0630
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| .5
| REGULAR
| 0.5310
| 1.2500
| 0.1000
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| .5
| WIDE
| 0.5310
| 1.7500
| 0.1000
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| .5625
| NARROW
| 0.5940
| 1.1250
| 0.0630
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| .5625
| REGULAR
| 0.5940
| 1.4690
| 0.1000
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| .5625
| WIDE
| 0.5940
| 2.0000
| 0.1000
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| .625
| NARROW
| 0.6560
| 1.2500
| 0.1000
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| .625
| REGULAR
| 0.6560
| 1.7500
| 0.1000
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| .625
| WIDE
| 0.6560
| 2.2500
| 0.1600
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| .75
| NARROW
| 0.8120
| 1.3750
| 0.1000
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| .75
| REGULAR
| 0.8120
| 2.0000
| 0.1000
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| .75
| WIDE
| 0.8120
| 2.5000
| 0.1600
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| .875
| NARROW
| 0.9380
| 1.4690
| 0.1000
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| .875
| REGULAR
| 0.9380
| 2.2500
| 0.1600
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| .875
| WIDE
| 0.9380
| 2.7500
| 0.1600
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| 1
| NARROW
| 1.0620
| 1.7500
| 0.1000
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| 1
| REGULAR
| 1.0620
| 2.5000
| 0.1600
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| 1
| WIDE
| 1.0620
| 3.0000
| 0.1600
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| 1.125
| NARROW
| 1.1880
| 2.0000
| 0.1000
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| 1.125
| REGULAR
| 1.1880
| 2.7500
| 0.1600
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| 1.125
| WIDE
| 1.1880
| 3.2500
| 0.1600
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| 1.25
| NARROW
| 1.3120
| 2.2500
| 0.1600
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| 1.25
| REGULAR
| 1.3120
| 3.0000
| 0.1600
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| 1.25
| WIDE
| 1.3120
| 3.5000
| 0.2500
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| 1.375
| NARROW
| 1.4380
| 2.5000
| 0.1600
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| 1.375
| REGULAR
| 1.4380
| 3.2500
| 0.1600
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| 1.375
| WIDE
| 1.4380
| 3.7500
| 0.2500
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| 1.5
| NARROW
| 1.5620
| 2.7500
| 0.1600
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| 1.5
| REGULAR
| 1.5620
| 3.5000
| 0.2500
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| 1.5
| WIDE
| 1.5620
| 4.0000
| 0.2500
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| 1.625
| NARROW
| 1.7500
| 3.0000
| 0.1600
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| 1.625
| REGULAR
| 1.7500
| 3.7500
| 0.2500
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| 1.625
| WIDE
| 1.7500
| 4.2500
| 0.2500
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| 1.75
| NARROW
| 1.8750
| 3.2500
| 0.1600
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| 1.75
| REGULAR
| 1.8750
| 4.0000
| 0.2500
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| 1.75
| WIDE
| 1.8750
| 4.5000
| 0.2500
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| 1.875
| NARROW
| 2.0000
| 3.5000
| 0.2500
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| 1.875
| REGULAR
| 2.0000
| 4.2500
| 0.2500
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| 1.875
| WIDE
| 2.0000
| 4.7500
| 0.2500
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| 2
| NARROW
| 2.1250
| 3.7500
| 0.2500
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| 2
| REGULAR
| 2.1250
| 4.5000
| 0.2500
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| 2
| WIDE
| 2.1250
| 5.0000
| 0.2500
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| 2.25
| NARROW
| 2.3750
| 4.0000
| 0.2500
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| 2.25
| REGULAR
| 2.3750
| 5.0000
| 0.2500
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| 2.25
| WIDE
| 2.3750
| 5.5000
| 0.3750
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| 2.5
| NARROW
| 2.6250
| 4.5000
| 0.2500
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| 2.5
| REGULAR
| 2.6250
| 5.5000
| 0.3750
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| 2.5
| WIDE
| 2.6250
| 6.0000
| 0.3750
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| 2.75
| NARROW
| 2.8750
| 5.0000
| 0.2500
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| 2.75
| REGULAR
| 2.8750
| 6.0000
| 0.3750
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| 2.75
| WIDE
| 2.8750
| 6.5000
| 0.3750
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| 3
| NARROW
| 3.1250
| 5.5000
| 0.3750
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| 3
| REGULAR
| 3.1250
| 6.5000
| 0.3750
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3
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WIDE
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3.1250
| 7.0000
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0.3750
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