8 x 5/8 Phillips Bugle Head Coarse Thread Drywall Screw Black Phosphate Particle Board NT4188 and is suitable for use

and is suitable for use with bolts of the same size and thread pitch

while the 6 1/2-inch length allows for deep penetration into materials

The 5/16 Internal Tooth Lock Washer is a high-quality washer designed to prevent loosening of bolted joints due to vibration or shock

indicating its ability to withstand high levels of stress and torque

The 7/8-14 x 6 Hex Cap Screw Grade 8 Yellow Zinc is a high-strength fastener designed for demanding applications

8 x 5/8 Phillips Bugle Head Coarse Thread Drywall Screw Black Phosphate Particle Board NT4188 and is suitable for useThese 8 x 5 8 Phillips bugle head coarse thread drywall screws are made of black phosphate particle board and are designed for use in drywall applications. They have a sharp point for easy penetration and a bugle head that countersinks into the drywall without damaging the surface. The coarse thread provides a strong hold in drywall and other soft materials. These screws are also corrosion resistant for long lasting performance.