ISO 7050 ST3.5 x 38 Countersunk Tapping Screw
In stock in 7 material, grade and finish combinations.
Dimensions at ST3.5 x 38
mm · ISO 7050 · 2011 edition| Dimension | Nominal | Min | Max | DIN 7982 | GB/T 846 | |
|---|---|---|---|---|---|---|
| d | Thread size | ST3.5 | – | – | ST3.5 | ST3.5 |
| P | Thread pitch | 1.3 | – | – | 1.3 | 1.3 |
| l | Length | 38 | – | – | 38 | 38 |
| a | Thread runout | – | – | 2.6 | 1.3 | 2.6 |
| dk | Theoretical head diameter | 7.3 | 6.9 | 8.2 | — | 6.9–8.2 |
| k | Head height | 2.35 | – | – | 2.1 | 2.35 |
| r | Radius | – | – | 1.4 | 1.4 | 1.4 |
| Recess number | 2 | – | – | 2 | 2 | |
| m | Type H recess width (ref) | 4.4 | – | – | 4.2 | 4.4 |
| Type H penetration | – | 1.9 | 2.4 | 1.62–2.12 | 1.9–2.4 | |
| m | Type Z / socket width (ref) | 4.1 | – | – | 4 | 4.1 |
| Type Z penetration | – | 1.75 | 2.2 | 1.6–2.06 | 1.75–2.2 | |
| y | Point length (ref.) (C) | 3.2 | – | – | 3.2 | 3.2 |
| y | Point length (ref.) (F) | 2.5 | – | – | 2.5 | 2.5 |
| y | Point length (ref.) (R) | 2.7 | – | – | — | 2.7 |
- DIN 7982, GB/T 846
- Values in bold differ from ISO 7050.
- Length incl. head
- 38 mm · 36.7–39.3 mm (Type C / R), 36.7–38 mm (Type F) to ISO 7050 product grade A
- Approx. weight
- ≈ 1.99 kg per 1 000 pieces · Bare steel, before coating and packing.503 pieces per kg
- Also named
- GB/T 846
Other lengths in ST3.5
All 49 sizes of Phillips Countersunk Self-Tapping ScrewNearby sizesST4.2 x 9.5