M6 Allen Grub Screw
M6 headless grub screws with cup point per DIN 916 / ISO 4029 and internal hex drive in alloy steel hardness class 45H. Shaft locking and component fixation at 6mm diameter.
Specification
#
Standard
DIN 916 / ISO 4029 (EN ISO 4029)
Material
Alloy Steel
Thread
Coarse (standard)
Grade
12.9
Coating
Black oxide
Head Type
Headless (no head)
Drive Type
Hexagon socket (Allen key/hex wrench)
Point Type
Cup point (concave depression)
Dimension
#
Size
Thread Dia (d)
Pitch
Length(L)
Thread Length (b)
M3
2.87-3.00
0.5
3mm - 20mm
Full
M4
3.85-4.00
0.7
4mm - 30mm
Full
M5
4.85-5.00
0.8
4mm - 40mm
Full
M6
5.85-6.00
1.0
5mm - 50mm
Full
M8
7.83-8.00
1.25
6mm - 50mm
Full
- All dimensions in mm, tolerance +/- 0.01 mm. Additional dimensions available on request.
Benefits
#
Grub screws at 6mm provide a compact shaft-locking solution for small mechanisms and precision instruments. The cup point creates a controlled indentation in the mating shaft, generating a positive mechanical lock against rotational slip and axial displacement. The headless design installs entirely within the threaded bore, eliminating protrusions that interfere with adjacent components. Hardness class 45H ensures effective indentation on most shaft materials. At this diameter, grub screws are suited to light-duty shaft fixation in instruments, small gears, and collars.
Common Applications
#
Common applications for M6 grub screws include:
- Precision instrument adjustment locking
- Small gear and collar fixation on shafts
- Knob and handle attachment
- Electrical terminal connections
- Light-duty coupling assembly
Read Me
| Standard | DIN 916 / ISO 4029 (EN ISO 4029) |
| Material | Alloy Steel |
| Thread | Coarse (standard) |
| Grade | 12.9 |
| Coating | Black oxide |
| Head Type | Headless (no head) |
| Drive Type | Hexagon socket (Allen key/hex wrench) |
| Point Type | Cup point (concave depression) |
| Size | Thread Dia (d) | Pitch | Length(L) | Thread Length (b) |
|---|---|---|---|---|
| M3 | 2.87-3.00 | 0.5 | 3mm - 20mm | Full |
| M4 | 3.85-4.00 | 0.7 | 4mm - 30mm | Full |
| M5 | 4.85-5.00 | 0.8 | 4mm - 40mm | Full |
| M6 | 5.85-6.00 | 1.0 | 5mm - 50mm | Full |
| M8 | 7.83-8.00 | 1.25 | 6mm - 50mm | Full |
