*These are a machine screw nut; flat, not crowned/shouldered, like regular nuts are.
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USS Flat Washers
Product Number
Nominal Size
Finish
Each
Buy 10
Buy 25
Buy 50
Buy 100
006FWUSBO
#6
Black Oxide
$0.04
008FWUSBO
#8
Black Oxide
$0.04
010FWUSBO
#10
Black Oxide
$0.05
25FWUSBO
1/4"
Black Oxide
$0.04
25FWUSBZP
1/4"
Bronze Plate
$0.06
31FWUSBO
5/16"
Black Oxide
$0.05
37FWUSBO
3/8"
Black Oxide
$0.06
43FWUSBO
7/16"
Black Oxide
$0.10
50FWUSBO
1/2"
Black Oxide
$0.20
62FWUSBO
5/8"
Black Oxide
$0.28
75FWUSBO
3/4"
Black Oxide
$0.45
87FWUSBO
7/8"
Black Oxide
$0.65
Big Flat Washers
Product Number
Dimensions
Finish
QOH
Price Ea.
Buy 10
Buy 100
75SPECW300BO
0.752 ID x 2.998 OD x 0.116 Thk.
Black Oxide
179
$1.20
Use these Big Flat Washers on beam-work, and/or with stay-bolts, etc. Find Stay Bolts (Rods with short threads on both ends) on the Long Bolts page.
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Split Lockwashers
Product Number
Size
Finish
Each
Buy 10
Buy 25
Buy 50
Buy 100
006LOCKBO
#6
Black Oxide
$0.04
008LOCKBO
#8
Black Oxide
$0.04
010LOCKBO
#10
Black Oxide
$0.05
25LOCKBO
1/4"
Black Oxide
$0.05
31LOCKBO
5/16"
Black Oxide
$0.06
37LOCKBO
3/8"
Black Oxide
$0.07
43LOCKBO
7/16"
Black Oxide
$0.09
50LOCKBO
1/2"
Black Oxide
$0.12
62LOCKBO
5/8"
Black Oxide
$0.19
75LOCKBO
3/4"
Black Oxide
$0.26
87LOCKBO
7/8"
Black Oxide
$0.35
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Rub Washers
Rub Washers for your Square Head bolts
Have you ever wanted something to keep the bolthead corners from digging into the finish on your bracket, mounting plate, or escutcheon?
Rub Washers will do that for you.
With a snug inside diameter that keeps itself well-centered on the bolt shank, and an outer diameter no larger then the bolt-head's across-the-flats dimension, a Rub Washer keeps the corners of the square head from digging into the finish on it's last half-turn. And they're thinner than a standard flatwasher or lockwasher, too.
We have them in all the common bolt sizes, in the table below.
Steel Rub Washers, Black Oxide finish
Product Number
Size
Dimensions
Price Ea.
Buy 10
Buy 100
25RWBO
1/4"
0.256 x 0.378 x 0.047
$0.05
31RWBO
5/16"
0.323 x 0.500 x 0.063
$0.06
37RWBO
3/8"
0.380 x 0.565 x 0.064
$0.08
50RWBO
1/2"
0.508 x 0.750 x 0.064
$0.10
62SRWBO*
5/8", small
0.627 x 0.939 x 0.058
$0.14
62LRWBO*
5/8", large
0.690 x 0.880 x 0.081
$0.14
75SRWBO*
3/4", small
0.780 x 1.066 x 0.062
$0.20
75LRWBO*
3/4", large
0.807 x 1.090 x 0.040
$0.20
* See note below.
There are some older square head lags in the larger diameters, with oversized shanks, that require Rub washers with a larger inside diameter than the newer bolts. Accordingly, we have both a "small" and a "large" version of these sizes. If you purchase both square head lags and Rub Washers from us, we will make sure the washers will fit your bolts before we ship the order.
