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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|CIF||IL||12 Point Flange Screw (CounterBore)||Steel||Phosphate||3/4-16 x 8 1/2||3/4-16 x 8 1/2 12 point flange bolt alloy steel heat treated to 33/39 hrc phos coated for 72 hours to red rust||3980|
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