Wafer-Head Phillips Self-Drilling Screws AU
Head Type：Wafer Head
Thread Type：Coarse Thread
Material Options：Carbon steel /Stainless steel（304/316）
Finish / Coating：Class 3/Zinc
Applications：
- Metal-to-metal fastening in light-gauge steel
- Stitching of metal roofing and wall cladding sheets
- Fixing thin metal panels, liners, and accessories
- Applications requiring a low-profile head with wide bearing surface
Designed for sheet metal fastening, this wafer head self-drilling screw provides fast installation, strong holding, and reduced risk of pull-through.
| Size | Length (inch) | Length (mm) | Dia (mm) | Drill Tail |
|---|---|---|---|---|
| SDM 8–18 × 12 | 1/2″ | 12 | 4.2 | #2 |
| SDM 8–18 × 25 | 1″ | 25 | 4.2 | #2 |
| SDM 10–16 × 16 | 5/8″ | 16 | 4.8 | #3 |
| SDM 10–24 × 16 | 5/8″ | 16 | 4.8 | #3 |
| SDM 10–24 × 22 | 7/8″ | 22 | 4.8 | #3 |