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Washers

Nominal
Washer Size
A
B
C
Inside Diameter
Outside Diameter
Thickness
Min.
Max.
Max.
Min.
Max.
Min.
2
0.086
4
0.112
6
0.138
8
0.164
10
0.190
12
0.216
1/4
0.250
5/16
0.312
3/8
0.375
7/16
0.438
1/2
0.500
5/8
0.625
1/8
Pipe
0.089
0.115
0.141
0.168
0.195
0.221
0.256
0.320
0.384
0.448
0.512
0.640
0.425
0.095
0.123
0.150
0.176
0.204
0.231
0.267
0.332
0.398
0.464
0.530
0.663
0.410
0.200
0.270
0.295
0.340
0.381
0.410
0.478
0.610
0.692
0.789
0.900
1.071
0.615
0.175
0.255
0.275
0.325
0.365
0.394
0.460
0.594
0.670
0.740
0.867
1.045
0.595
0.015
0.019
0.021
0.023
0.025
0.025
0.028
0.034
0.040
0.040
0.045
0.050
0.022
0.010
0.015
0.017
0.018
0.020
0.020
0.023
0.028
0.032
0.032
0.037
0.042
0.017

Nominal
Washer Size
A
B
C
Inside Diameter
Outside Diameter
Thickness
Min.
Max.
Max.
Min.
Max.
Min.
4
0.112
6
0.138
8
0.164
10
0.190
12
0.216
1/4
0.250
5/16
0.312
3/8
0.375
7/16
0.438
1/2
0.500
5/8
0.625
0.115
0.141
0.168
0.195
0.221
0.256
0.320
0.384
0.448
0.513
0.641
0.123
0.150
0.176
0.204
0.231
0.267
0.332
0.398
0.464
0.530
0.663
0.260
0.320
0.381
0.410
0.475
0.510
0.610
0.694
0.760
0.900
1.071
0.245
0.305
0.365
0.395
0.460
0.494
0.588
0.670
0.740
0.880
1.045
0.019
0.022
0.023
0.025
0.028
0.028
0.034
0.040
0.040
0.045
0.050
0.015
0.016
0.018
0.020
0.023
0.023
0.028
0.032
0.032
0.037
0.042

Nominal Washer Size
A
Inside Diameter
B
Outside Diameter
C
Thickness
Min.
Max.
Max.
Min.
Max.
Min.
6
0.138
8
0.164
10
0.190
1/4
0.250
0.141
0.168
0.195
0.256
0.150
0.176
0.204
0.267
0.510
0.510
0.610
0.760
0.495
0.495
0.580
0.725
0.028
0.028
0.034
0.040
0.023
0.023
0.028
0.032

Fender Washers

Bolt Size
ID
OD
TH
Approx
No. in
20#
10

1/4

1/4

1/4

5/16

5/16

3/8

3/8

1/2
7/32

9/32

9/32

9/32

11/32

11/32

13/32

13/32

17/32
1

1

1-1/4

1-1/2

1-1/4

1-1/2

1-1/4

1-1/2

2
.051
.080
.051
.080
.051
.080
.051
.080
.051
.080
.051
.080
.051
.080
.051
.080
.051
.080
1.4M

1.5M

.92M

.62M

.96M

.64M

.94M

.66M

.38M

Bolt
Size, In.
Outside Dia.,
In.
Inside Dia.,
In.
American
Standard Gauge
Approx.
Lbs. Per
M Pcs.
Approx.
No./Pcs.
Per Lb.
3/16
1/4
5/16
3/8
7/16
1/2
9/16
5/8
3/4
7/8
1
1-1/8
1-1/4
1-3/8
1-1/2
1-5/8
1-3/4
1-7/8
2
2-1/4
2-1/2
2-3/4
3
9/16
3/4
7/8
1
1-1/4
1-3/8
1-1/2
1-3/4
2
2-1/4
2-1/2
2-3/4
3
3-1/4
3-1/2
3-3/4
4
4-1/4
4-1/2
4-3/4
5
5-1/4
5-1/2
1/4
5/16
3/8
7/16
1/2
9/16
5/8
11/16
13/16
15/16
1-1/16
1-1/4
1-3/8
1-1/2
1-5/8
1-3/4
1-7/8
2
2-1/8
2-3/8
2-5/8
2-7/8
3-1/8
18(3/64)
16(1/16)
14(5/64)
14(5/64)
14(5/64)
12(7/64)
12(7/64)
10(9/64)
9(5/32)
8(11/64)
8(11/64)
8(11/64)
8(11/64)
7(3/16)
7(3/16)
7 (3/16)
7(3/16)
7(3/16)
7(3/16)
5(7/32)
4(15/64)
3(1/4)
2(5/32)
2.8
6.7
11.5
14.9
24.4
38.5
45.5
77
110
153
188
220
260
333
385
448
500
569
630
826
961
1100
1300
361
149
87
67
41
26
22
13
9.1
6.5
5.3
4.5
3.8
3
2.6
2.3
2
1.8
1.6
1.2
1
.9
.8

SAE Washers

Bolt Size, In.
Outside Dia., In.
Inside Dia., In.
American
Standard Gauge
Approx.
Lbs. Per
M Pcs.
Approx.
No/Pcs.
Per Lb.
4
6
8
3/16
12
1/4
5/16
3/8
7/16
1/2
9/16
5/8
3/4
7/8
1
1-1/8
1-1/4
1-3/8
1-1/2
5/16
3/8
7/16
1/2
9/16
5/8
11/16
13/16
59/64
1-1/16
1-3/16
1-5/16
1-1/2
1-3/4
2
2-1/4
2-1/2
2-3/4
3
1/8
5/32
3/16
7/32
1/4
9/32
11/32
13/32
15/32
17/32
19/32
21/32
13/16
15/16
1-1/16
1-3/16
1-5/16
1-7/16
1-9/16
21(1/32)
18(3/64)
18(3/64)
18(3/64)
16(1/16)
16(1/16)
16(1/16)
16(1/16)
16(1/16)
13(3/32)
13(3/32)
13(3/32)
10(9/64)
10(9/64)
10(9/64)
10(9/64)
9(5/32)
9(5/32)
9(5/32)
.58
1.26
1.7
2.3
3.4
4.5
5.2
7.2
9.5
18.3
23.4
27.7
47.4
63
83
109
160
190
240
1650
790
585
435
280
222
192
140
105
55
43
36
21
16
12
9.2
6.25
5.25
4.25

Nominal
Washer Size
A
B
C
D
Inside Diameter
Outside
Diameter
Thickness
Length
Min.
Max.
Ref.
Max.
Min.
Max.
Min.
6
0.138
8
0.164
10
0.190
1/4
0.250
0.140
0.167
0.195
0.255
0.150
0.177
0.205
0.267
0.301
0.340
0.369
0.468
0.021
0.021
0.025
0.025
0.017
0.017
0.020
0.020
0.092
0.105
0.099
0.128
0.082
0.088
0.083
0.113

Nominal
Washer Size
A
B
T
W
Inside
Diameter
Outside
Diameter
Mean Sect. Thickness
(T + t)
2
Section Width
Max.
Min.
Med. Max.
Heavy Max.
Med. Min.
Heavy Min.
Med. Min.
Heavy Min.
2
0.086
3
0.099
4
0.112
5
0.125
0.094
0.107
0.120
0.133
0.088
0.101
0.114
0.127
0.172
0.195
0.209
0.236
0.182
0.209
0.223
0.252
0.020
0.025
0.025
0.031
0.025
0.031
0.031
0.040
0.035
0.040
0.040
0.047
0.040
0.047
0.047
0.055
6
0.138
8
0.164
10
0.190
12
0.216
0.148
0.174
0.200
0.227
0.141
0.167
0.193
0.220
0.250
0.293
0.334
0.377
0.266
0.307
0.350
0.391
0.031
0.040
0.047
0.056
0.040
0.047
0.056
0.063
0.047
0.055
0.062
0.070
0.055
0.062
0.070
0.077
1/4
0.250
5/16
0.312
3/8
0.375
7/16
0.438
0.262
0.326
0.390
0.455
0.254
0.317
0.380
0.443
0.489
0.586
0.683
0.779
0.491
0.596
0.691
0.787
0.062
0.078
0.094
0.109
0.077
0.097
0.115
0.133
0.109
0.125
0.141
0.156
0.110
0.130
0.145
0.160
1/2
0.500
9/16
0.562
5/8
0.625
11/16
0.688
0.518
0.582
0.650
0.713
0.506
0.570
0.635
0.698
0.873
0.971
1.079
1.176
0.883
0.981
1.093
1.192
0.125
0.141
0.156
0.172
0.151
0.170
0.189
0.207
0.171
0.188
0.203
0.219
0.176
0.193
0.210
0.227
3/4
0.750
13/16
0.812
7/8
0.875
15/16
0.938
0.775
0.843
0.905
0.970
0.760
0.824
0.887
0.950
1.271
1.367
1.464
1.560
1.291
1.391
1.494
1.594
0.188
0.203
0.219
0.234
0.226
0.246
0.266
0.284
0.234
0.250
0.266
0.281
0.244
0.262
0.281
0.298
1
1.000
1-1/16
1.062
1-1/8
1.125
1-3/16
1.188
1.042
1.107
1.172
1.237
1.017
1.080
1.144
1.208
1.661
1.756
1.853
1.950
1.705
1.808
1.909
2.008
0.250
0.266
0.281
0.297
0.306
0.326
0.345
0.364
0.297
0.312
0.328
0.344
0.319
0.338
0.356
0.373
1-1/4
1.250
1-5/16
1.312
1-3/8
1.375
1-7/16
1.438
1-1/2
1.500
1.302
1.366
1.432
1.497
1.561
1.271
1.334
1.398
1.462
1.525
2.045
2.141
2.239
2.334
2.430
2.113
2.211
2.311
2.406
2.502
0.312
0.328
0.344
0.359
0.375
0.384
0.403
0.422
0.440
0.458
0.359
0.375
0.391
0.406
0.422
0.393
0.410
0.427
0.442
0.458

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