ISO 14587 ST4.2 x 19 6-Lobe Raised CSK Screw
In stock in 5 material, grade and finish combinations.
Dimensions at ST4.2 x 19
mm · ISO 14587 · 2011 edition| Dimension | Nominal | Min | Max | GB/T 2670.3 | |
|---|---|---|---|---|---|
| d | Thread size | ST4.2 | – | – | ST4.2 |
| P | Thread pitch | 1.4 | – | – | 1.4 |
| l | Length | 19 | – | – | 19 |
| a | Thread runout | – | – | 1.4 | 1.4 |
| dk | Theoretical head diameter | 8.4 | 8 | 9.4 | 8–9.4 |
| k | Head height | 2.6 | – | – | 2.6 |
| r | Radius | – | – | 1.6 | 1.6 |
| Socket number | 20 | – | – | 20 | |
| A | Hexalobular socket A (ref) | 3.95 | – | – | 3.95 |
| t | Socket depth | – | 1.42 | 1.8 | 1.42–1.8 |
| y | Point length (ref.) (C) | 3.7 | – | – | 3.7 |
| y | Point length (ref.) (F) | 2.8 | – | – | 2.8 |
| y | Point length (ref.) (R) | 3.2 | – | – | 3.2 |
| f | Raised head height (ref) | 1 | – | – | 1 |
| rf | Head radius (ref) | 9.5 | – | – | 9.5 |
- GB/T 2670.3
- Values in bold differ from ISO 14587.
- Length to top of countersink
- 19 mm · 18.2–19.8 mm (Type C / R), 18.2–19 mm (Type F) to ISO 14587 product grade A
- Approx. weight
- ≈ 1.98 kg per 1 000 pieces · Bare steel, before coating and packing.506 pieces per kg
- Also named
- GB/T 2670.3
Other lengths in ST4.2
All 10 sizes of Hexalobular Socket Raised Countersunk Head Tapping Screw1932
Nearby sizesST3.5 x 19
StandardsISO 14587GB/T 2670.3All sizes