TYPES OF SCREW HEADS FOR DUMMIES

when you’re having hassle differentiating between Phillips and Pozidrive screws, look at the two from the facet—the latter could have ribs among Every of the 4 arms, marked by using a “pz”. Breakaway fasteners used in a non-safety software can have a 2nd driveable surface (like a hex head) to allow later removing or adjustment from the fas