10 x 2 1/2 Phillips Bugle Head Coarse Thread Drywall Screw Black Phosphate Particle Board 07NCUP They feature a serrated flange

They feature a serrated flange that bites into the mating surface

This rivet nut is designed to be used in a variety of applications

The nut has a 7/16-20 thread size and a castellated design

It is made of durable steel and has a zinc yellow finish that provides excellent corrosion resistance

10 x 2 1/2 Phillips Bugle Head Coarse Thread Drywall Screw Black Phosphate Particle Board 07NCUP They feature a serrated flangeThese 10 x 2 1 2 Phillips Bugle Head Coarse Thread Drywall Screws are designed for use in drywall applications. They are made of black phosphate particle board and have a coarse thread for increased holding power. The Phillips bugle head provides a secure fit and prevents stripping. These screws are ideal for use in both residential and commercial applications.