Feature:

• Self-drilling screw, in addition to the tap-like flute in the leading threads, there is also a drill-like fluted tip that looks much like the tip of a center drill. These screws combine a threading-like action and the fastener installation itself into only one driving motion (instead of separate drilling, tapping, and installing motions); they are thus very efficient in a variety of hard-substrate applications, from assembly lines to roofing.
• Hex washer self drilling screws can be can be locked more firmly if the screws vibration occurs,the flange part can be used as a flat washer, which can be locked firmly on softer and non-wearable materials.
• According to the thickness of the material,you can choose the self-drilling screws. The thicker the material, the larger and longer self-drilling screws.

Note:

1. 410 stainless steel is magnetic and can’t be detected with magnets.
2. When tapping, please keep the screw in the same straight line and perpendicular to the plane.

Specification:
Screw Diameter :#12(5.5mm)
Screw Length: 3/4″
External Hex Dia.: 8mm/0.31inch
Screw Cap Thickness: 5.2mm/0.2inch
Head Diameter: 12mm/0.47inch
Material: 410 Stainless Steel
Color: Silver Tone
Package:
25pcs x Hex Washer Head Self Drilling Screws