ISO 15483 ST4.8 x 38 Raised CSK Drill Screw
In stock in 7 material, grade and finish combinations.
Dimensions at ST4.8 x 38
mm · ISO 15483 · 1999 edition| Dimension | Nominal | Min | Max | DIN 7504 R | GB/T 15856.3 | |
|---|---|---|---|---|---|---|
| d | Thread size | ST4.8 | – | – | ST4.8 | ST4.8 |
| P | Thread pitch | 1.6 | – | – | 1.6 | 1.6 |
| l | Length | 38 | – | – | 38 | 38 |
| a | Thread runout | – | – | 1.6 | — | 1.6 |
| dk | Theoretical head diameter | 9.3 | 8.9 | 10.4 | — | 8.9–10.4 |
| k | Head height | 2.8 | – | – | — | 2.8 |
| r | Radius | – | – | 2 | — | 2 |
| Recess number | 2 | – | – | — | 2 | |
| m | Type H recess width (ref) | 5.4 | – | – | — | 5.4 |
| Type H penetration | – | 2.9 | 3.4 | — | 2.9–3.4 | |
| m | Type Z / socket width (ref) | 5.6 | – | – | — | 5.6 |
| Type Z penetration | – | 2.9 | 3.35 | — | 2.9–3.35 | |
| Drilling capacity | – | 1.75 | 4.4 | 1.75–4.4 | 1.75–4.4 | |
| f | Raised head height (ref) | 1.2 | – | – | — | 1.2 |
| rf | Head radius (ref) | 9.5 | – | – | — | 9.5 |
- DIN 7504 R, GB/T 15856.3
- Values in bold differ from ISO 15483.
- Length to top of countersink
- 38 mm · 36.75–39.25 mm to ISO 15483
- Approx. weight
- ≈ 4.28 kg per 1 000 pieces · Bare steel, before coating and packing.233 pieces per kg
- Also named
- GB/T 15856.3