Wings above drill point provide clearance hole in work piece so it won’t climb up the shank

Self-countersinking nibs under head insure seating of screw head flush with work surface

6 x 2 Phillips Bugle Coarse Drywall Screws Phosphate Coated - Carton (3500)

3/4-10 x 6 Grade 8 Hex Cap Screw Yellow Zinc Plated

1 1/2-12 x 5 Socket Cap Screw Alloy

1-8 x 9 1/2 Grade 5 Hex Cap Screw Zinc Plated M24-3.0 Hex Cap Screws 8.8 DIN 933 Zinc Plated (Fully Threaded) Wings above drill point provide1 8 x 9 1 2 Grade 5 Hex Cap Screw Zinc Plated . Grade 5 Hex Cap Screws are manufactured from medium carbon steel. Our Grade 5 material meets or exceeds SAE J429 Grade 5 specifications. All products are manufactured with rolled threads. Zinc plated material meets or exceeds ASTM F1941. Typical hardness on diameters 1 4 to 1 inch is HRC 25 34. On diameters over 1 inch to 1 1 2 hardness will range from HRC 19 30. Tensile strength for diameters 1 4 to 1