SELF DRILLING SCREWS BI-METAL
APPLICATION
Hex head Bi-metal austentic stainless steel grade 304 (also available in grade 316) self drilling screws with a hardened drill point are used to fasten sheet metal to steel purlins and rails. High-thread (HT) screws are recommended for fixing on sandwich panels. Thread dia: #12 (5.5mm), #14 (6.3mm) Thread type: Coarse(”A”), fine(“AB”), machined(“C”) depending upon drill capacity Length : 1″ – 9″ (25mm – 225mm)
| Drill point | Drill thickness | Recommended drive speed |
| #2 | 1.5 – 3.5mm | Max. 2500 RPM |
| #3 | 2.0- 5.0mm | Max. 2500 RPM |
| #5 | 6.0 – 12.5mm | Max. 1800 RPM |
Washer : Stainless steel 16mm and 19mm bonded to EPDM.
