Drywall screws are used for connection of gypsum board and wooden keel, gypsum board and light steel keel. Drywall screws are mainly black, that is Black phosphate, some are blue white or blue which is blue zinc plated.
But how to choose the drywall screw, what’s the standard? Pls kindly find the following standards:
1. The head must be round enough. Otherwise, could not matching with plaster board completely.
2. Tips of the drywall screw must pointed and plump enough. Corner of the tips should between 22º-26º.
3. Could not off the center. Otherwise, the tool will waggle when screwing in.
4. Philips must in the center of the head. Otherwise, the tool will waggle too when screwing in.
Huanyi-Fastener could offer you high standard drywall screw for you use with reasonable price, welcome sending inquiry are needs to us.