ISO 14579 M8 x 55 Socket Head Cap Screw
In stock in 10 material, grade and finish combinations.
Dimensions at M8 x 55
mm · ISO 14579 · 2011 edition| Dimension | Nominal | Min | Max | |
|---|---|---|---|---|
| d | Thread size | M8 | – | – |
| P | Thread pitch | 1.25 | – | – |
| l | Length | 55 | – | – |
| dk | Head diameter | 13 | 12.73 | – |
| k | Head height | 8 | 7.64 | – |
| b | Thread length | 28 | – | – |
| r | Radius | – | 0.4 | – |
| Recess number | 45 | – | – | |
| A | Hexalobular socket A (ref) | 7.95 | – | – |
| t | Socket depth | – | 2.92 | 3.31 |
- Length under head
- 55 mm · 54.4–55.6 mm to ISO 14579 product grade A
- Approx. weight
- ≈ 24.51 kg per 1 000 pieces · Bare steel, before coating and packing.40.8 pieces per kg
Holes for this thread
ISO 273 · ISO 2306Clearance hole · fine8.4 mm
Clearance hole · medium9 mm
Clearance hole · coarse10 mm
Tap drill6.8 mm
