8-15 x 3 Square Drive Trim Head Drywall Screw Fine Thread Black Phosphate D125A188B while the zinc finish helps

while the zinc finish helps to protect the screw from corrosion

these nuts are compatible with M16 bolts and studs

The M20 size is suitable for use with M20 bolts or screws

Its large wings provide ample grip

8-15 x 3 Square Drive Trim Head Drywall Screw Fine Thread Black Phosphate D125A188B while the zinc finish helpsThese 8 15 x 3 Square Drive Trim Head Drywall Screws with Fine Thread and Black Phosphate finish are designed for superior holding power in drywall applications. Their square drive design ensures a secure fit with your drill bit, preventing cam out and stripping. The fine thread provides a strong grip in drywall, while the black phosphate finish offers corrosion resistance. These screws are ideal for attaching drywall to wood or metal studs, making