ISO 15481 ST2.9 x 16 Pan Head Drill Screw
Made to order in 7 material, grade and finish combinations.
Dimensions at ST2.9 x 16
mm · ISO 15481 · 1999 edition| Dimension | Nominal | Min | Max | DIN 7504 M | GB/T 15856.1 | |
|---|---|---|---|---|---|---|
| d | Thread size | ST2.9 | – | – | ST2.9 | ST2.9 |
| P | Thread pitch | 1.1 | – | – | 1.1 | 1.1 |
| l | Length | 16 | – | – | 16 | 16 |
| a | Thread runout | – | – | 1.1 | — | 1.1 |
| da | Underhead diameter | – | – | 3.5 | — | 3.5 |
| dk | Head diameter | 5.6 | 5.3 | – | — | 5.3 |
| k | Head height | 2.4 | 2.15 | – | — | 2.15 |
| r | Radius | – | 0.1 | – | — | 0.1 |
| rf | Head radius (ref) | 5 | – | – | — | 5 |
| Recess number | 1 | – | – | — | 1 | |
| m | Type H recess width (ref) | 3 | – | – | — | 3 |
| Type H penetration | – | 1.4 | 1.8 | — | 1.4–1.8 | |
| m | Type Z / socket width (ref) | 3 | – | – | — | 3 |
| Type Z penetration | – | 1.45 | 1.75 | — | 1.45–1.75 | |
| Drilling capacity | – | 0.7 | 1.9 | 0.7–1.9 | 0.7–1.9 |
- DIN 7504 M, GB/T 15856.1
- Values in bold differ from ISO 15481.
- Length under head
- 16 mm · 15.1–16.9 mm to ISO 15481
- Approx. weight
- ≈ 0.83 kg per 1 000 pieces · Bare steel, before coating and packing.1211 pieces per kg
- Also named
- GB/T 15856.1