Hex Flange Head Self-Drilling Screw,Metal-to-Metal
Head Type：Hex Flang Head
Thread Type：Coarse Thread
Material Options：Carbon steel /Stainless steel（304/316）
Finish / Coating： C8 Coating /Class 4/Ruspert /Zinc/
Applications：
- Overlapping metal roofing sheets
- Corrugated and trapezoidal steel panels
- Metal cladding joint stitching
- Light gauge steel construction
- Agricultural and industrial sheds
Designed for fast installation and secure fastening, this self-drilling screw delivers excellent drilling efficiency, strong clamping performance, and reliable long-term holding strength in demanding construction environments.
| Size | Length (inch) | Length (mm) | Dia (mm) | Drill Tail |
| SDM 8–18 × 12 | 1/2″ | 12 | 4.2 | #2 |
| SDM 10–16 × 16 | 5/8″ | 16 | 4.8 | #2 |
| SDM 10–16 × 25 | 1″ | 25 | 4.8 | #2 |
| SDM 12–14 × 20 | 3/4″ | 20 | 5.5 | #3 |
| SDM 12–14 × 25 | 1″ | 25 | 5.5 | #3 |
| SDM 12–14 × 30 | 1-3/16″ | 30 | 5.5 | #3 |
| SDM 12–14 × 50 | 2″ | 50 | 5.5 | #3 |
| SDM 12–14 × 75 | 3″ | 75 | 5.5 | #3 |
| SDM 14–10 × 25 | 1″ | 25 | 6.3 | #3 |
| SDM 14–10 × 42 | 1-5/8″ | 42 | 6.3 | #3 |
| SDM 14–10 × 50 | 2″ | 50 | 6.3 | #3 |
| SDM 14–10 × 65 | 2-1/2″ | 65 | 6.3 | #3 |
| SDM 14–10 × 75 | 3″ | 75 | 6.3 | #3 |
| SDM 14–10 × 90 | 3-1/2″ | 90 | 6.3 | #3 |
| SDM 14–10 × 110 | 4-3/8″ | 110 | 6.3 | #3 |
| SDM 14–10 × 150 | 6″ | 150 | 6.3 | #3 |