Hex Head Self Drilling Screw

Self drilling screws are installed with a standard power driver...each screw drills its own hole, taps its own threads, fastens the material, and seals the penetration...all in a single operation.

Threads are coarse. Length is measured from under the head for hex, hex washer, and pan head styles. For flat head, length measurement includes head.

Frequently used with sheet metal as well as stainless steel, aluminum, brass and plastic. 

Size: st2.9/st3.5/st3.9/st4.2/st4.8.st5.5/st6.3/st8

Thread Pitch: 1.1/1.3/1.3/1.4/1.6/1.8/1.8/2.1

Head Thickness: as per size

Across Flats: as per size

Material: steel

Grades: 4.8/6.8/8.8/10.9/12.9

Finish: zinc plated (galvanized), dacromet, etc

Technical Info: DIN 7504K