Product Description
1/2" UNF Self Colour Steel Countersunk Socket Screws – 2" Length
High tensile steel countersunk socket screws with a 1/2"-20 UNF fine thread and a self colour, unplated finish. The flat countersunk head provides a flush finish when installed in a correctly prepared countersunk hole.
The internal hexagon socket accepts a matching imperial Allen key or hex driver. These screws are suitable for machinery, tooling and general engineering assemblies requiring imperial countersunk socket fasteners.
Technical Specifications
| Thread designation | 1/2"-20 UNF |
|---|---|
| Nominal thread diameter | 1/2" / 12.7mm |
| Threads per inch | 20 TPI |
| Thread form | Unified National Fine |
| Overall length | 2" / 50.8mm, including the head |
| Material | High tensile steel |
| Finish | Self colour / unplated |
| Head type | Flat countersunk |
| Drive type | Internal hexagon socket |
| Dimensional specification | ANSI B18.3 |
| Mechanical specification | ASTM F835 |
Key Features
- Fine UNF thread for matching tapped holes or compatible nuts.
- Countersunk head for a flush installation.
- Internal hexagon drive for use with an imperial Allen key.
- Self colour steel finish without zinc plating.
Ordering Information
Available in 2" overall length, in packs of 1, 5, 10, 20, 50 or 100 screws. Countersunk screw length includes the head.
