PRODUCT SPECIFICATIONSPart #: 0000-182553Fastener Type: 12-Point Flange ScrewSize Description: 3/4-10 x 3Diameter/Nominal Size: 3/4Length: 3Wrench Size/Across Flats: 0.743-0.752"Head Height: 0.750"Flange Diameter: 1.107-1.125"Flange Thickness: 0.318-0.338"Thread Pitch: 10Thread Pitch Type: CoarseThread Direction: RightSystem of Measurement: InchGrade: 170 KSI Alloy Steel (Grade 9)Material: Alloy SteelFinish: Thermal Black OxideHead Type: 12-Point with FlangeDrive Type: External 12-PointAverage Piece Weight: 0.4780000 lbs.12-Point flange screws, also known as Ferry Bolts are high-strength fasteners where the flange diameter and head thickness of the 12-Point Flange Screw are equivalent to the head dimensions of a socket head cap screw, thus permitting the 12-Point Flange Screw to be a replacement for any application that calls for a socket head cap screw. The 12-point head design means that this screw can be tightened with a 12-point socket wrench which allows higher torques to be applied as compared to a standard internal hex drive socket head cap screw. The head or wrench size is the same as the body size.