2 x 1/4" UNC: x 3/4", x 1".
2 x 5/16" UNC: x 1", x 1 1/2".
2 x 3/8" UNC: x 1", x 1 1/2".
2 x 5/16" UNC: x 1", x 1 1/2".
2 x 3/8" UNC: x 1", x 1 1/2".
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