A standard Drywall Screws can be identified by its black finish. This block coating comes from a phosphate coating that is applied to these screws. This coating minimize rusting and corrosion. Drywall screw almost have a Phillips bulge head rather than a slotted head, which provides additional control for installers.
1. For the specified anchor size, select carbide or core drill bit with nominal diameter as listed below in Table.
2. Drill hole to depth listed below.
3. Essentially clean holes with brush and blower.
4. Remove debris with hole cleaning pump, compressed air or with a brush.
5. If the holes are wet or flooded, clean hole with brush.
6. Insert Capsule into hole.
7. Spin in Welfast Stud as per required anchorage depth using a rotary hammer drill.
8. Allow adhesive to cure for the time as listed below.
9. When cured, tighten nut applying the necessary tightening torque.
| Screw Size(mm) | Head Type | Screw head Type | Box/Pack Quantity(pcs) |
|---|---|---|---|
| 3.5×25 | Bugle | 2 Phillips | Variable |
| 3.5×32 | Bugle | 2 Phillips | |
| 3.5×35 | Bugle | 2 Phillips | |
| 3.5×38 | Bugle | 2 Phillips | |
| 3.5×42 | Bugle | 2 Phillips | |
| 3.5×45 | Bugle | 2 Phillips | |
| 3.5×50 | Bugle | 2 Phillips | |
| 3.5×55 | Bugle | 2 Phillips | |
| 3.5×60 | Bugle | 2 Phillips | |
| 3.5×70 | Bugle | 2 Phillips | |
| 3.5×75 | Bugle | 2 Phillips | |
| 3.5×90 | Bugle | 2 Phillips | |
| 3.5×100 | Bugle | 2 Phillips | |
| 3.5×110 | Bugle | 2 Phillips |
