“Purchased 1000 and I'm approx used 900 but there has been at least 50 plus which wont fit the square head bit ( too wobbly or too tight, some of each) other than that they are great screws”
“I bought the screws to use for 9mm villa board because your ad showed i didnt need to counter sink. They worked some of the time into .55 steel studs quite well. Once a stud had a few screws in it they didnt hold very well and when putting in the next screw below (300 centres) they would pop. Also they would not go through 1.15 steel.”