Black oxide SAE flat washers to go with all your black hardware

all dimensions below in inch measurement

1/2" SAE  - 0.54 ID, 1.1 OD

1/2" USS - 0.577 ID, 1.39 OD

3/8" SAE - 0.42 ID, 0.81 OD

3/8" USS - 0.44 ID, 1.0 OD

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5/16" SAE - 0.36 ID, 0.69 OD

5/16" USS - 0.385 ID, 0.875 OD

1/4" SAE - 0.29 ID, 0.62 OD

1/4" USS - 0.322 ID, 0.775 OD