Washers are small, disc-shaped objects having a hole, usually in the middle. Stainless Steel Flat Washers typically disperse the weight of threaded fasteners, such as nuts and bolts. Although the stainless steel countersunk washers serve similar purposes to flat washers, they also serve as a bearing surface for flat head screws and have a sealing function.
The inner hole diameter of penny washers is significantly larger than the outer hole diameter. This proportionality aids in a wider and more even load distribution. Both stainless steel penny washers and Stainless Steel Fender Washers are used interchangeably. steel is stainless The form of Belleville washers is somewhat conical. In assemblies where there are instances of thermal expansion and contraction, the washer's conical form aids in maintaining tension. Since they insulate the stainless steel screws from the surfaces of the aluminium, stainless steel lock washers aid in preventing galvanic corrosion.
The inner hole diameter of penny washers is significantly larger than the outer hole diameter. This proportionality aids in a wider and more even load distribution. Both stainless steel penny washers and stainless steel fender washers are used interchangeably. steel is stainless The form of Belleville Washers is somewhat conical. In assemblies where there are instances of thermal expansion and contraction, the washer's conical form aids in maintaining tension. Since they insulate the stainless steel screws from the surfaces of the aluminium, stainless steel lock washers aid in preventing galvanic corrosion.
| Specifications of SS Washers | ASME SA193 ASTM A193 |
| Standard of Stainless Steel Washers | ASTM, DIN, BS and all International Standards |
| Length of Stainless Steel Washer | M02 to M33 |
| Size of Stainless Steel Washers | 3 mm to 200 mm |
| Type of Stainless Steel Washers | Lock Washer, Flat Washer, Split Washer, Sealing Washer, Machine Washer, Slot Washer, Star Washer SPRINGS – Flat Spring & Wire Spring |
Size |
USS |
SAE |
||||
|---|---|---|---|---|---|---|
Inside Diameter (A) |
Outside Diameter (B) |
Thickness (C) |
Inside Diameter (A) |
Outside Diameter (B) |
Thickness (C) |
|
#2 |
- |
- |
- |
3/32" |
1/4" |
0.020" |
#4 |
- |
- |
- |
1/8" |
5/16" |
0.032" |
#6 |
- |
- |
- |
5/32" |
3/8" |
0.049" |
#8 |
- |
- |
- |
3/16" |
7/16" |
0.049" |
#10 |
- |
- |
- |
7/32" |
1/2" |
0.049" |
#12 |
- |
- |
- |
1/4" |
9/16" |
0.065" |
1/4" |
5/16" |
0.734" |
0.065" |
9/32" |
5/8" |
0.065" |
5/16" |
3/8" |
7/8" |
0.083" |
11/32" |
11/16" |
0.065" |
3/8" |
7/16" |
1" |
0.083" |
13/32" |
13/16" |
0.065" |
7/16" |
1/2" |
1-1/4" |
0.083" |
15/32" |
15/16" |
0.065" |
1/2" |
9/16" |
1-3/8" |
0.109" |
17/32" |
1-1/16" |
0.095" |
9/16" |
5/8" |
1-15/32" |
0.109" |
19/32" |
1-5/32" |
0.095" |
5/8" |
11/16" |
1-3/4" |
0.134" |
21/32" |
1-5/16" |
0.095" |
3/4" |
13/16" |
2" |
0.148" |
13/16" |
1-15/32" |
0.134" |
7/8" |
15/16" |
2-1/4" |
0.165" |
15/16" |
1-3/4" |
0.134" |
1" |
1-1/16" |
2-1/2" |
0.165" |
1-1/16" |
2" |
0.134" |
1-1/8" |
1-1/4" |
2-3/4" |
0.165" |
- |
- |
- |
1-1/4" |
1-3/8" |
3" |
0.165" |
- |
- |
- |
1-3/8" |
1-1/2" |
3-1/4" |
0.180" |
- |
- |
- |
1-1/2" |
1-5/8" |
3-1/2" |
0.180" |
- |
- |
- |
1-5/8" |
1-3/4" |
3-3/4" |
0.180" |
- |
- |
- |
1-3/4" |
1-7/8" |
4" |
0.180" |
- |
- |
- |
2" |
2-1/8" |
4-1/2" |
0.213" |
- |
- |
- |
NOM SIZE |
Inner Dia (d) Basic Tol (+) |
Outer Dia (d1) Max |
WIDTH (b) Basic Tol (+ or -) |
THICKNESS (S) Basic Tol (+ or -) |
Weight per 1000 in Kgs |
|||
3 |
3.1 |
0.3 |
6.2 |
1.3 |
0.1 |
0.8 |
0.1 |
0.11 |
4 |
4.1 |
0.3 |
7.6 |
1.5 |
0.1 |
0.9 |
0.1 |
0.18 |
5 |
5.1 |
0.3 |
9.2 |
1.8 |
0.1 |
1.2 |
0.1 |
0.36 |
6 |
6.1 |
0.4 |
11.8 |
2.5 |
0.15 |
1.6 |
0.1 |
0.83 |
8 |
8.1 |
0.4 |
14.8 |
3 |
0.15 |
2 |
0.1 |
1.60 |
10 |
10.2 |
0.5 |
18.1 |
3.5 |
0.2 |
2.2 |
0.15 |
2.53 |
12 |
12.2 |
0.5 |
21.1 |
4 |
0.2 |
2.5 |
0.15 |
3.82 |
14 |
14.2 |
0.5 |
24.1 |
4.5 |
0.2 |
3 |
0.15 |
6.01 |
16 |
16.2 |
0.8 |
27.4 |
5 |
0.2 |
3.5 |
0.2 |
8.91 |
18 |
18.2 |
0.8 |
29.4 |
5 |
0.2 |
3.5 |
0.2 |
9.73 |
20 |
20.2 |
1 |
33.6 |
6 |
0.2 |
4 |
0.2 |
15.20 |
22 |
22.5 |
1 |
35.9 |
6 |
0.2 |
4 |
0.2 |
16.50 |
24 |
24.5 |
1 |
40 |
7 |
0.25 |
5 |
0.2 |
26.20 |
27 |
27.5 |
1 |
43 |
7 |
0.25 |
5 |
0.2 |
28.70 |
30 |
30.5 |
1.2 |
48.2 |
8 |
0.25 |
6 |
0.2 |
44.30 |
33 |
33.5 |
1.2 |
55.2 |
10 |
0.25 |
6 |
0.2 |
63.00 |
36 |
36.5 |
1.2 |
58.2 |
10 |
0.25 |
6 |
0.2 |
67.30 |
39 |
39.5 |
1.2 |
61.2 |
10 |
0.25 |
6 |
0.2 |
71.70 |
42 |
42.5 |
1.2 |
68.2 |
12 |
0.25 |
7 |
0.25 |
111.00 |
45 |
45.5 |
1.2 |
71.2 |
12 |
0.25 |
7 |
0.25 |
117.00 |
48 |
49 |
1.5 |
75 |
12 |
0.25 |
7 |
0.25 |
123.00 |
52 |
53 |
1.5 |
83 |
14 |
0.25 |
8 |
0.25 |
320.00 |
Bolt Size
|
USS
|
SAE
|
||||
OD (in.)
|
ID (in.)
|
Thickness
|
OD (in.)
|
ID (in.)
|
Thickness
|
|
1/8 (#6)
|
-
|
-
|
-
|
0.375
|
0.156
|
.036/.065
|
5/32 (#8)
|
-
|
-
|
-
|
0.438
|
0.188
|
.036/.065
|
3/16 (#10)
|
0.560
|
0.250
|
.036/.065
|
0.500
|
0.220
|
.036/.065
|
7/32 (#12)
|
-
|
-
|
-
|
0.562
|
0.250
|
.051/.080
|
1/4 (#14)
|
0.734
|
0.312
|
.051/.080
|
0.625
|
0.281
|
.051/.080
|
5/16
|
0.875
|
0.375
|
.064/.104
|
0.688
|
0.344
|
.051/.080
|
3/8
|
1.000
|
0.438
|
.064/.104
|
0.812
|
0.406
|
.051/.080
|
7/16
|
1.250
|
0.500
|
.064/.104
|
0.922
|
0.469
|
.051/.080
|
1/2
|
1.375
|
0.562
|
.086/.132
|
1.062
|
0.531
|
.074/.121
|
9/16
|
1.469
|
0.625
|
.086/.132
|
1.156
|
0.594
|
.074/.121
|
5/8
|
1.750
|
0.688
|
.108/.160
|
1.312
|
0.656
|
.074/.121
|
3/4
|
2.000
|
0.812
|
.122/.177
|
1.469
|
0.812
|
.108/.160
|
7/8
|
2.250
|
0.938
|
.136/.192
|
1.750
|
0.938
|
.108/.160
|
1
|
2.500
|
1.062
|
.136/.192
|
2.000
|
1.062
|
.108/.160
|
1 1/8
|
2.750
|
1.250
|
.136/.192
|
2.250
|
1.250
|
.108/.160
|
1 1/4
|
3.000
|
1.375
|
.136/.192
|
2.500
|
1.375
|
.136/.192
|
1 3/8
|
3.250
|
1.500
|
.153/.213
|
2.750
|
1.500
|
.136/.213
|
1 1/2
|
3.500
|
1.625
|
.153/.213
|
3.000
|
1.625
|
.153/.213
|
1 5/8
|
3.750
|
1.750
|
.153/.213
|
-
|
-
|
-
|
1 3/4
|
4.000
|
1.875
|
.153/.213
|
-
|
-
|
-
|
1 7/8
|
4.250
|
2.000
|
.153/.213
|
-
|
-
|
-
|
2
|
4.500
|
2.125
|
.153/.213
|
-
|
-
|
-
|
2 1/4
|
4.750
|
2.375
|
.320/.248
|
-
|
-
|
-
|
2 1/2
|
5.000
|
2.625
|
.210/.280
|
-
|
-
|
-
|
2 3/4
|
5.250
|
2.875
|
.228/.410S
|
-
|
-
|
-
|
3
|
5.500
|
3.125
|
.249/.327
|
-
|
-
|
-
|
