8 1/2 inch length Counterbore Screws

12-point Flange Screws, Counterbore Screws,  Ferry Head Cap Screws or Counterbore Screws, feature a 12 point head and a flanged bearing surface. Usually fully threaded, the 12-point design provides for higher tightening torque, without edge rounding and they are covered under ASME Standard B18.2.1

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CIFIL12 Point Flange Screw (CounterBore)SteelPhosphate3/4-16 x 8 1/23/4-16 x 8 1/2 12 point flange bolt alloy steel heat treated to 33/39 hrc phos coated for 72 hours to red rust3980

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