Size
M3.9 x 19mm ~ M3.9 x 55mm
M4.2 x 25mm ~ M4.2 x 65mm

Fermacell Screw, Trim Head, With 6 Nibs (or 4 Nibs) Under Head, Hi-Lo Thread, Sharp Point
M3.9 x 19mm ~ M3.9 x 55mm
M4.2 x 25mm ~ M4.2 x 65mm
Coating Options: Phosphate, Zinc
Recess Options: Phillip Drive
More Coating and Recess Options Available Upon Inquiry
Drywall screws are designed primarily for attaching drywall sheets (also called plasterboard) to wooden or metal studs in construction. Their specific design—sharp points and coarse threads for wood or fine threads for metal—helps them penetrate and hold securely in place.
Here are some key uses for drywall screws:
They've become a versatile tool in construction and home improvement because they're strong and relatively easy to work with.