Hex head Stainless Steel grade 410 self drilling screws are used to fasten sheet metal to steel purlins and rails. Thread dia : #14 (6.3mm) Thread type: Coarse(”A”), fine (“AB”), machined (“C”) depending upon drill capacity
Drill Point
Drill Thickness
Recommended drive speed
#2
1.5 – 3.5mm
Max. 1800 RPM
#3
2.0- 5.0mm
Max. 1800 RPM
#5
6.0 – 12.5mm
Max. 1800 RPM
Washer : Stainless steel 16mm and 19mm bonded to EPDM.