Product Description
1/4 UNF Self Colour High Tensile Cup Point Grub Screws
Self colour steel socket cup point grub screws with a 1/4-28 UNF thread. Listed by the supplier as 12.9 high tensile, these headless screws are used to secure components such as collars, pulleys and knobs onto shafts.
Specifications
| Feature | Specification |
|---|---|
| Thread Size | 1/4 inch UNF |
| Threads Per Inch | 28 TPI |
| Material | Steel |
| Supplier Grade Designation | 12.9 high tensile |
| Finish | Self colour |
| Point Style | Cup point |
| Drive | 1/8 inch hexagon socket |
Available Lengths
1/4 inch, 5/16 inch, 7/16 inch, 1/2 inch, 5/8 inch and 3/4 inch.
Key Features
- Headless design for recessed installation
- Cup point grips the mating surface
- UNF fine thread
- Internal hexagon drive
- Six listed length options
Standards Reference
DIN 916 / ISO 4029 covers the corresponding metric cup point socket set screw type. ASME B18.3 is the relevant inch-series dimensional reference.
Installation
Use a correctly fitting 1/8 inch hexagon key and a matching 1/4-28 UNF tapped hole. The cup point can mark the shaft or mating surface. Tighten to suit the component and application.
Self colour steel has no plated corrosion protection. Apply suitable protection where exposed to moisture.
Useful Links
Specifications are intended as a guide. Confirm the required thread, length and socket size before ordering.
