Screws | Self-tapping Screws:

* Bulge head to fasten plasterboard onto metals (e.g. 0.8~2.5mm-thick steel) * Sharp-pointed for easier, faster setting * Black-phosphate coated or ...

Hex-washer-flanged head (roofing screws)

Flat-headed, with wing & shank slots; fasten wood onto heavy-gauge metal

Double-threaded, hex-washer-headed; fasten steel sheets onto wood beams

Hex-flange-headed, hi-lo-threaded

* Unique, corrosion-resistant finish * Ridges beneath screw head

* Bulge-headed, coarse-threaded drywall screws * Hardened, countersunk screws * Tri-lock-threaded screws * Corrosion-resistant for outdoor use

* Twin-thread for two-times faster setting * Countersunk head for extra-tight grip * Suitable for soft/hard synthetic boards