Socket Flat Head Screw Head Type Flat System of Measurement Inch Drive Type Socket Material Steel Finish Zinc Plated Thread Size 1/4 In.-28 Minimum Thread Length 1 1/4 in Fastener Length 1 1/4 in Pack Size Small Pack Special Features Not Applicable Countersink Angle 82 Degrees Dimensional Standards ASME B18.3 Flange Diameter Not Applicable Flange Thickness Not Applicable Package Quantity 100