5/16-18 x 3 1/2 Six Lobe Pan Floor Board Screw Type F Fully Threaded Black Phosphate MBF10BP it features a full contour

it features a full contour truss head for maximum bearing surface and a sharp point for easy penetration

The Grade 5 rating indicates its strength and ability to withstand heavy loads

making this screw ideal for use in metal

These 6-18 x 7/8 Phillips pan self-tapping screws are Type A screws made of 18-8 stainless steel

These 8 x 4 Phillips Bugle Head Coarse Thread Drywall Screws are designed for use in drywall applications

5/16-18 x 3 1/2 Six Lobe Pan Floor Board Screw Type F Fully Threaded Black Phosphate MBF10BP it features a full contourThe 5 16 18 x 3 1 2 Six Lobe Pan Floor Board Screw Type F Fully Threaded Black Phosphate is a high quality screw designed for use in floorboard applications. The screw features a six lobe pan head that provides a secure hold and prevents stripping. The fully threaded shank ensures a strong connection between the screw and the floorboard. The black phosphate finish provides corrosion resistance and a professional appearance. The screw is 3 1 2 inches