3/16 Allen Grub Screw (Inch)
ASME B18.3 3/16" hexagon socket set screws with cup point in hardened alloy steel. Inch-dimensioned grub screws for shaft locking in legacy and US-specification machinery at 3/16-inch.
Specification
#
Standard
ASME B18.3
Material
Alloy Steel
Thread
UNC (Coarse)
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 (TPI)
Length(L)
Thread Length (b)
3/16
0.1887-0.1900
24
3/16" - 1"
Full
1/4
0.2489-0.2500
20
1/4" - 1
Full
5/16
0.3113-0.3125
18
5/16" - 1 1/2"
Full
3/8
0.3737-0.3750
16
3/8" - 1 1/2"
Full
1/2
0.4985-0.5000
13
1/2" - 1 1/2"
Full
5/8
0.6232-0.6250
11
5/8" - 1 1/2"
Full
- All dimensions in inches, tolerance +/- 0.001 in. Additional dimensions available on request.
Benefits
#
The 3/16-inch inch grub screw serves shaft-locking applications in imperial-dimensioned assemblies where metric fasteners are not interchangeable. Cup point geometry creates a positive mechanical lock without keyed connections, simplifying shaft-to-component fixation. Internal hex drive allows installation with standard Allen keys. Hardened alloy steel maintains cup point effectiveness on carbon steel and alloy shafts. UNC coarse threads provide reliable engagement in standard inch-tapped holes.
Common Applications
#
3/16" inch grub screws are specified for shaft-locking in US-specification equipment:
- Legacy US-specification machinery
- Shaft-to-collar locking on inch shafts
- Pulley fixation on imperial shafts
- Door handle and lockset hardware
- Automotive powertrain components
Read Me
| Standard | ASME B18.3 |
| Material | Alloy Steel |
| Thread | UNC (Coarse) |
| 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 (TPI) | Length(L) | Thread Length (b) |
|---|---|---|---|---|
| 3/16 | 0.1887-0.1900 | 24 | 3/16" - 1" | Full |
| 1/4 | 0.2489-0.2500 | 20 | 1/4" - 1 | Full |
| 5/16 | 0.3113-0.3125 | 18 | 5/16" - 1 1/2" | Full |
| 3/8 | 0.3737-0.3750 | 16 | 3/8" - 1 1/2" | Full |
| 1/2 | 0.4985-0.5000 | 13 | 1/2" - 1 1/2" | Full |
| 5/8 | 0.6232-0.6250 | 11 | 5/8" - 1 1/2" | Full |
