ISO 7050 ST4.2 x 50 Countersunk Tapping Screw
In stock in 7 material, grade and finish combinations.
Dimensions at ST4.2 x 50
mm · ISO 7050 · 2011 edition| Dimension | Nominal | Min | Max | DIN 7982 | GB/T 846 | |
|---|---|---|---|---|---|---|
| d | Thread size | ST4.2 | – | – | ST4.2 | ST4.2 |
| P | Thread pitch | 1.4 | – | – | 1.4 | 1.4 |
| l | Length | 50 | – | – | 50 | 50 |
| a | Thread runout | – | – | 2.8 | 1.4 | 2.8 |
| dk | Theoretical head diameter | 8.4 | 8 | 9.4 | — | 8–9.4 |
| k | Head height | 2.6 | – | – | 2.5 | 2.6 |
| r | Radius | – | – | 1.6 | 1.6 | 1.6 |
| Recess number | 2 | – | – | 2 | 2 | |
| m | Type H recess width (ref) | 4.6 | – | – | 4.7 | 4.6 |
| Type H penetration | – | 2.1 | 2.6 | 2.11–2.62 | 2.1–2.6 | |
| m | Type Z / socket width (ref) | 4.4 | – | – | 4.4 | 4.4 |
| Type Z penetration | – | 2.06 | 2.51 | 2.05–2.51 | 2.06–2.51 | |
| y | Point length (ref.) (C) | 3.7 | – | – | 3.7 | 3.7 |
| y | Point length (ref.) (F) | 2.8 | – | – | 2.8 | 2.8 |
| y | Point length (ref.) (R) | 3.2 | – | – | — | 3.2 |
- DIN 7982, GB/T 846
- Values in bold differ from ISO 7050.
- Length incl. head
- 50 mm · 48.7–51.3 mm (Type C / R), 48.5–50 mm (Type F) to ISO 7050 product grade A
- Approx. weight
- ≈ 3.82 kg per 1 000 pieces · Bare steel, before coating and packing.261 pieces per kg
- Also named
- GB/T 846
Other lengths in ST4.2
All 49 sizes of Phillips Countersunk Self-Tapping ScrewNearby sizesST4.8 x 9.5