Truss-Head Self-Drilling Screws
Head Type：Truss Head
Thread Type：Coarse Thread
Material Options：Carbon steel /Stainless steel（304/316）
Finish / Coating：Class3/Dacromet/Ruspert /Zinc
Applications：
- Metal sheet stitching and lap joints
- Fixing thin steel panels, cladding, and liners
- General metal-to-metal fastening in light-gauge steel
- Applications requiring wide bearing surface and low-profile head
Designed for sheet metal fastening, this truss head self-drilling screw provides fast installation, secure holding, and reduced risk of pull-through.
| Size | Length (inch) | Length (mm) | Dia (mm) | Drill Tail |
|---|---|---|---|---|
| SDM 8–18 × 13 | 1/2″ | 13 | 4.2 | #2 |
| SDM 8–18 × 16 | 5/8″ | 16 | 4.2 | #2 |
| SDM 8–18 × 19 | 3/4″ | 19 | 4.2 | #2 |
| SDM 8–18 × 25 | 1″ | 25 | 4.2 | #2 |
| SDM 8–18 × 32 | 1-1/4″ | 32 | 4.2 | #2 |
| SDM 8–18 × 38 | 1-1/2″ | 38 | 4.2 | #2 |
| SDM 8–18 × 50 | 2″ | 50 | 4.2 | #2 |