Product Description
1/2" UNF A2 stainless steel hex head set screws, fully threaded for general engineering, automotive, machinery, fabrication, repair and maintenance applications. These imperial fine thread fasteners are manufactured from A2 stainless steel, giving good corrosion resistance for general indoor, outdoor and damp environments.
The hexagon head allows installation with a standard spanner or socket, while the fully threaded shank is suitable where the thread needs to run close to the underside of the head. These 1/2" UNF set screws have a 20 TPI Unified National Fine thread and are available in imperial lengths including 7/8", 1", 1 3/4" and 4 1/2".
For imperial UNF products, the suitable standard references are ASME B18.2.1 for hex head dimensions and ASME B1.1 for the UNF thread form.
- 1/2" UNF hex head set screws
- Fully threaded
- A2 stainless steel
- 20 TPI UNF fine thread
- ASME B18.2.1 / ASME B1.1 style
- Lengths include 7/8", 1", 1 3/4" and 4 1/2"
- Available in small and bulk pack sizes
Also known as UNF set screws, imperial stainless hex set screws, fully threaded hex bolts, A2 stainless UNF bolts and stainless UNF hex screws.

| A | B | C | D | E |
| 1/2" | 1 3/4" | 3/4" | 5/16" | 20 |
| 1/2" | 4 1/2" | 3/4" | 5/16" | 20 |
| 1/2" | 7/8" | 3/4" | 5/16" | 20 |
| 1/2" | 1" | 3/4" | 5/16" | 20 |
Please Note: Specifications given are intended as a guide only. If critical to your project please check with us first.