ISO 7050 ST5.5 x 50 Countersunk Tapping Screw
In stock in 7 material, grade and finish combinations.
Dimensions at ST5.5 x 50
mm · ISO 7050 · 2011 edition| Dimension | Nominal | Min | Max | DIN 7982 | GB/T 846 | |
|---|---|---|---|---|---|---|
| d | Thread size | ST5.5 | – | – | ST5.5 | ST5.5 |
| P | Thread pitch | 1.8 | – | – | 1.8 | 1.8 |
| l | Length | 50 | – | – | 50 | 50 |
| a | Thread runout | – | – | 3.6 | 1.8 | 3.6 |
| dk | Theoretical head diameter | 10.3 | 9.9 | 11.5 | — | 9.9–11.5 |
| k | Head height | 3 | – | – | 3.4 | 3 |
| r | Radius | – | – | 2.2 | 2.1 | 2.2 |
| Recess number | 3 | – | – | 3 | 3 | |
| m | Type H recess width (ref) | 6.6 | – | – | 6.8 | 6.6 |
| Type H penetration | – | 2.8 | 3.3 | 2.95–3.53 | 2.8–3.3 | |
| m | Type Z / socket width (ref) | 6.3 | – | – | 6.3 | 6.3 |
| Type Z penetration | – | 2.73 | 3.18 | 2.72–3.18 | 2.73–3.18 | |
| y | Point length (ref.) (C) | 5 | – | – | 5 | 5 |
| y | Point length (ref.) (F) | 3.6 | – | – | 3.6 | 3.6 |
| y | Point length (ref.) (R) | 4.3 | – | – | — | 4.3 |
- 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
- ≈ 6.63 kg per 1 000 pieces · Bare steel, before coating and packing.151 pieces per kg
- Also named
- GB/T 846
Other lengths in ST5.5
All 49 sizes of Phillips Countersunk Self-Tapping ScrewNearby sizesST6.3 x 13