ISO 14586 ST3.5 x 25 6-Lobe CSK Tapping Screw
In stock in 5 material, grade and finish combinations.
Dimensions at ST3.5 x 25
mm · ISO 14586 · 2011 edition| Dimension | Nominal | Min | Max | GB/T 2670.2 | |
|---|---|---|---|---|---|
| d | Thread size | ST3.5 | – | – | ST3.5 |
| P | Thread pitch | 1.3 | – | – | 1.3 |
| l | Length | 25 | – | – | 25 |
| a | Thread runout | – | – | 1.3 | 1.3 |
| dk | Theoretical head diameter | 7.3 | 6.9 | 8.2 | 6.9–8.2 |
| k | Head height | 2.35 | – | – | 2.35 |
| r | Radius | – | – | 1.4 | 1.4 |
| Socket number | 15 | – | – | 15 | |
| A | Hexalobular socket A (ref) | 3.35 | – | – | 3.35 |
| t | Socket depth | – | 1 | 1.3 | 1–1.3 |
| y | Point length (ref.) (C) | 3.2 | – | – | 3.2 |
| y | Point length (ref.) (F) | 2.5 | – | – | 2.5 |
| y | Point length (ref.) (R) | 2.7 | – | – | 2.7 |
- GB/T 2670.2
- Values in bold differ from ISO 14586.
- Length incl. head
- 25 mm · 24.2–25.8 mm (Type C / R), 23.7–25 mm (Type F) to ISO 14586 product grade A
- Approx. weight
- ≈ 1.42 kg per 1 000 pieces · Bare steel, before coating and packing.702 pieces per kg
- Also named
- GB/T 2670.2
Other lengths in ST3.5
All 30 sizes of Hexalobular Socket Countersunk Head Tapping ScrewNearby sizesST4.2 x 9.5
StandardsISO 14586GB/T 2670.2All sizes