Self-Drilling Screws (Hex Head Washer With Rubber Washer)

Self drilling screws (hex head washer with EPDM)
1. Standard: GB/T 15856.4-1995
2. Material: Carbon steel
3. Diameter: 3.5mm --6.3mm: 6#--14#
4. Length: 9.5--280mm
5. Finish: Zinc yellow; Zinc blue; Zinc colorful.

Operation manual
1. Moving positioner of the drill to aproper spot to assure the screw down to the right position
2. Checking rev of the drill to assure it at 2000-2500/min.
3. Installing the selected fixer to the drill, then insert the screw to the fixer.
4. During installation, keep the drill and screw tertical to the surface of pressing model steel plate in order to creatral point.
5. Applying a power of 14KG to the drill, asure the applied power against the central point vertically.
6. Switching the drill on without stop in the middle way, discontinue the drill at once on the screw getting at the tight position.