Dimensions of ASTM
F436 Hardened Steel Flat Washer
SIZE
ID
OD
THICKNESS
Nom
Max
Min
Nom
Max
Min
Max
Min
1/4
0.375
0.281
0.313
0.281
0.625
0.657
0.593
0.080
0.051
5/16
0.438
0.344
0.376
0.344
0.688
0.720
0.656
0.080
0.051
3/8
0.500
0.406
0.438
0.406
0.813
0.845
0.781
0.080
0.051
7/16
0.562
0.469
0.501
0.469
0.922
0.954
0.890
0.080
0.051
1/2
0.625
0.531
0.563
0.531
1.063
1.095
1.031
0.177
0.097
9/16
0.750
0.625
0.657
0.625
1.188
1.220
1.156
0.177
0.110
5/8
0.875
0.688
0.720
0.688
1.313
1.345
1.281
0.177
0.122
3/4
1.000
0.813
0.845
0.813
1.468
1.500
1.436
0.177
0.122
7/8
1.125
0.938
0.970
0.938
1.750
1.782
1.718
0.177
0.136
1
1.250
1.063
1.126
1.063
2.000
2.063
1.937
0.177
0.136
1 1/8
1.375
1.188
1.251
1.188
2.250
2.313
2.187
0.177
0.136
1 1/4
1.500
1.375
1.438
1.375
2.500
2.563
2.437
0.177
0.136
1 3/8
1.625
1.500
1.563
1.500
2.750
2.813
2.687
0.177
0.136
1 1/2
1.750
1.625
1.688
1.625
3.000
3.063
2.937
0.177
0.136
1 3/4
1.875
1.875
1.938
1.875
3.375
3.438
3.312
0.178
0.280
2
2.000
2.125
2.188
2.125
3.750
3.813
3.687
0.178
0.280
2 1/4
2.250
2.375
2.438
2.375
4.000
4.063
3.937
0.240
0.340
2 1/2
2.500
2.625
2.688
2.625
4.500
4.563
4.437
0.240
0.340
2 3/4
2.750
2.875
2.938
2.875
5.000
5.063
4.937
0.240
0.340
3
3.000
3.125
3.188
3.125
5.500
5.563
5.437
0.240
0.340
3 1/4
3.250
3.375
3.500
3.375
6.000
6.125
5.875
0.240
0.340
3 1/2
3.500
3.625
3.750
3.625
6.500
6.625
6.375
0.240
0.340
3 3/4
3.750
3.875
4.000
3.875
7.000
7.125
6.875
0.240
0.340
4
4.000
4.125
4.250
4.125
7.500
7.625
7.375
0.240
0.340
Dimensions of
Hardened Bevelled Washers
Bolt Size,
in.
Min Side
Dimension (A), in.
Nominal
Inside
Diameter(I.D), in.
Mean
Thickness
(T), in.
Slope or
Taper
in Thickness
Nominal Edge
Distance(E)B, in.
1/2
1 3/4
17/32
5/16
1.6
7/16
5/8
1 3/4
11/16
5/16
1.6
9/16
3/4
1 3/4
13/16
5/16
1.6
21/32
7/8
1 3/4
15/16
5/16
1.6
25/32
1
1 3/4
1 1/8
5/16
1.6
7/8
1 1/8
2 1/4
1 1/4
5/16
1.6
1
1 1/4
2 1/4
1 3/8
5/16
1.6
1 3/32
1 3/8
2 1/4
1 1/2
5/16
1.6
1 7/32
1 1/2
2 1/4
1 5/8
5/16
1.6
1 5/16
Note : A :
Rectangular beveled washers shall conform to the dimensions shown above, except
that one side may be longer than that shown for the A dimension. B :
Clipped edge E shall not be closer than 7/8 of the bolt diameter from the center
of the washer.
Dimensional
Tolerances
Dimensional
Characteristics
<1 in.
Nominal Size
1 through 1½
in. Nominal Size
>1 ½ through
3 in.
Nominal Size
>3in.
Nominal Size
Nominal
diameter of hole, in.
-0, +0.032
-0, +0.063
-0, +0.063
-0, +0.125
Nominal
outside diameter, in.
+_0.032
+_0.063
+_ 0.063
+_ 0.125
Flatness:
max deviation from straightedge placed on cut side shall not exceed
(in.)
0.010
0.015
0.020
0.032
Concentricity, in : center of hole to outside diameter
0.030 FIRA
0.060 FIRA
0.090 FIRA
0.250 FIRA
Burr shall
not project above immediately adjacent washer surface more than (in.)