ISO 2009 M4 x 20 Slotted Countersunk Head Screw
In stock in 4 material, grade and finish combinations.
Dimensions at M4 x 20
mm · ISO 2009 · 2011 edition| Dimension | Nominal | Min | Max | DIN 963 | |
|---|---|---|---|---|---|
| d | Thread size | M4 | – | – | M4 |
| P | Thread pitch | 0.7 | – | – | 0.7 |
| l | Length | 20 | – | – | 20 |
| dk | Theoretical head diameter | 8.4 | – | 9.4 | — |
| k | Head height | 2.7 | – | – | 2.2 |
| n | Slot width (nominal) | 1.2 | – | – | 1 |
| t | Slot depth | – | 1 | – | 0.8 |
| b | Thread length | 38 | – | – | — |
- DIN 963
- Values in bold differ from ISO 2009.
- Length incl. head
- 20 mm · 19.58–20.42 mm to ISO 2009 product grade A
- Approx. weight
- ≈ 2.00 kg per 1 000 pieces · Bare steel, before coating and packing.500 pieces per kg
Holes for this thread
ISO 273 · ISO 2306Clearance hole · fine4.3 mm
Clearance hole · medium4.5 mm
Clearance hole · coarse4.8 mm
Tap drill3.3 mm
