For fastening timber and composite boards to metal where a flush finish is required.
The addition of wings cuts a slightly oversize hole permitting clear passage of the thread to engage
These screws have a Countersunk Ribbed head with a Phillips drive
10 gauge diameter = 4.9mm
Thread = 16 TPI
Use Phillips No.2 Drive Bit - Boltholder Code=PH275 - PHILLIPS BIT PH2 75MM LONG 1/4 AF
