1/2"-20
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1/2"-20 x 1-1/4"
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1/2"-20 x 1-1/2"
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1/2"-20 x 1-3/4"
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1/2"-20 x 2-1/4"
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1/2"-20 x 2-1/2"
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1/2"-20 x 3-1/2"
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1/2"-20 x 3-3/4"
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1/2"-20 x 4-1/2"
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1/2"-20 x 8-1/2"
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