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USS Flat Washers

ufwa.jpg

USS Flat Washers have a sloppier fit on a Bolt than a SAE Flat Washer, as they have a larger I.D. (Internal Diameter).

The O.D. (Outer Diameter) of a USS Washer is also larger than that of a SAE Flat Washer. 

Size

O.D.

I.D.

Thickness

# per Lb. (approx.)

3/16

9/16

1/4

3/64

361

1/4

3/4

5/16

1/16

149

5/16

7/8

3/8

5/64

87

3/8

1"

7/16

5/64

67

7/16

1-1/4

1/2

5/64

41

1/2

1-3/8

9/16

7/64

26

9/16

1-1/2

5/8

7/64

22

5/8

1-3/4

11/16

9/64

13

3/4

2"

13/16

5/32

9.1

7/8

2-1/4

15/16

11/64

6.5

1"

2-1/2

1-1/16

11/64

5.3

1-1/8

2-3/4

1-1/4

11/64

4.5

1-1/4

3"

1-3/8

11/64

3.8

1-3/8

3-1/4

1-1/2

3/16

3

1-1/2

3-1/2

1-5/8

3/16

2.6

1-5/8

3-3/4

1-3/4

3/16

2.3

1-3/4

4"

1-7/8

3/16

2

1-7/8

4-1/4

2"

3/16

1.8

2"

4-1/2

2-1/8

3/16

1.6

/4

4-3/4

2-3/8

7/32

1.2

2-1/2

5"

2-5/8

15/64

1.0

2-3/4

5-1/4

2-7/8

1/4

0.9

3"

5-1/2

3-1/8

5/32

0.9

 

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