Page 1 of 1 Fastenal Product Standard REV-07
Date: December 3, 2015 FW.LC.USS.Z
Flat Washers, Low Carbon, USS, Zinc Plated
The information below lists the required dimensional, chemical and physical characteristics of the products in this purchase order. If the order received does not meet these requirements, it may result in a supplier corrective action request, which could jeopardize your status as an approved vendor. Unless otherwise specified, all referenced consensus standards must be adhered to in their entirety.
Size
1
1-1/8
1-1/4
1-3/8
1-1/2
1-5/8
1-3/4
3/16
1/4
5/16
3/8
7/16
1/2
9/16
5/8
3/4
7/8
1-7/8
2
2-1/4
2-1/2
2-3/4
3
Basic
1.062
1.250
1.375
1.500
1.625
1.750
1.875
.250
.312
.375
.438
.500
.562
.625
.688
.812
.938
2.000
2.125
2.375
2.625
2.875
3.125
ID
Tolerance
.030
.030
.030
.045
.045
.045
.045
Plus
.015
.015
.015
.015
.015
.015
.015
.030
.030
.030
.045
.045
.045
.045
.065
.065
.007
.007
.007
.010
.010
.010
.010
Minus
.005
.005
.005
.005
.005
.005
.005
.007
.007
.007
.010
.010
.010
.010
.010
.010
2.500
2.750
3.000
3.250
3.500
3.750
4.000
4.250
4.500
4.750
5.000
5.250
5.500
USS Flat Washers
OD
Tolerance
Basic
.562
.734
.875
Plus
.015
.015
.030
Minus
.005
.007
.007
1.000
1.250
1.375
1.469
1.750
2.000
2.250
.030
.030
.030
.030
.030
.030
.030
.007
.007
.007
.007
.007
.007
.007
.030
.030
.030
.045
.045
.045
.045
.045
.045
.045
.045
.065
.065
.010
.010
.010
.010
.010
.010
.007
.007
.007
.010
.010
.010
.010
Specification Requirements:
•
Dimensions:
• Material:
•
Finish:
ASME B18.21.1, Type A Plain Washers
Carbon Steel
Fe/Zn 3AN per ASTM F1941/F1941M
Basic
.165
.165
.165
.180
.180
.180
.180
.049
.065
.083
.083
.083
.109
.109
.134
.148
.165
.180
.180
.220
.238
.259
.284
Thickness
Max.
.192
.192
.192
.213
.213
.213
.213
.065
.080
.104
.104
.104
.132
.132
.160
.177
.192
.213
.213
.248
.280
.310
.327
Min.
.136
.136
.136
.153
.153
.153
.153
.036
.051
.064
.064
.064
.086
.086
.108
.122
.136
.153
.153
.193
.210
.228
.249