8 x 1 1/2 Square Recess Drive Bugle Head Coarse Thread Drywall Screw Black Phosphate 1/4-8 and the flat head helps

and the flat head helps to create a flush finish

making them resistant to corrosion

Designed for superior holding power

5/8-18 NE Nylon Insert Hex Lock Nut Zinc is a type of nut that is used to secure bolts and screws

8 x 1 1/2 Square Recess Drive Bugle Head Coarse Thread Drywall Screw Black Phosphate 1/4-8 and the flat head helpsThese 8 x 1 1 2 Square Recess Drive Bugle Head Coarse Thread Drywall Screws are designed for use in drywall applications. They feature a square recess drive for easy installation, a bugle head for a countersunk finish, and coarse threads for a secure hold. The black phosphate coating provides corrosion resistance and durability. These screws are ideal for hanging drywall, installing fixtures, and other general construction projects.