WHAT IS "1310" AND "1350" SERIES

The connection of torque tubes to flanges are listed as two types; a "1310" or "1350" series. If checking for fit to an existing part, dimensions are noted in the sketch and chart to assist in identfying the correct series.
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Series "A" Bolt Hole Diagonal "B" Hole Diameter "C" Indent Diameter
1310 3 1/8" 3/8" 2 3/8"
1350 3 3/4" 7/16" 2 3/4"

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