Head Self Drilling Screw By Yongnian Zhonglei Fasteners Co., Ltd.

Understanding the requirements of our valued patrons, we are engaged in exporting Head Self Drilling Screw thare 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