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Cut-out ", flange dia 1 5/8", hull thickness 5/16" Each one needs 3 Bronze Countersunk 6g screws
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Cut-out 1", flange dia 2", hull thickness. Each one needs 3 Bronze Countersunk 8g screws
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Cut-out 1 3/16", flange dia 2 1/8", hull thickness 3/8" Each one needs 3 Bronze Countersunk 8g screws
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Cut-out 1", flange dia 2", hull thickness 3/8". Each one needs 3 Bronze Countersunk 8g screws