SELF TAPPING SCREWS TYPE A
APPLICATION
Hex head self tapping screws Type ‘A’ are used to fasten steel or aluminium profiles to steel purlins upto a maximum of 3.0mm thickness or to wood sub-structure. Available in Stainless Steel Grade 304/316 and Carbon Steel with RUSPERT/TUFCOTE coating. Thread dia: #14 (6.25-6.50mm) Thread type: Coarse(”A”) with sharp end Length: 1″ – 9″ (25mm – 225mm) Recommended drill bit diameters
| Metal thickness | Drill bit dia |
| 0.63-0.75mm | 4.0mm |
| 0.88-1.25mm | 4.5mm |
| 1.5-3.00mm | 5.0mm |
Recommended drive speed Stainless Steel Screw: 600 – 800 RPM Carbon Steel Screw: 1800 – 2000 RPM Washer : 16mm and 19mm bonded to EPDM seal.
