Product Description
BSF Socket Button Head Machine Screws – High Tensile Self Colour Steel
High tensile steel socket button head machine screws with British Standard Fine (BSF) threads and a self colour, unplated finish. The rounded button head provides a compact profile, while the internal hexagon socket allows installation using a matching Allen key.
Suitable for maintenance, restoration and engineering assemblies requiring a BSF threaded fixing.
Specifications
| Feature | Specification |
|---|---|
| Fastener type | Socket button head machine screw |
| Thread system | BSF – British Standard Fine |
| Material | High tensile steel |
| Finish | Self colour – unplated |
| Head style | Rounded button head |
| Drive type | Internal hexagon socket / Allen key |
| Length measurement | Measured from beneath the head to the end of the screw |
Listed Sizes and Dimensions
| Thread Size | Thread Pitch | Length | Approx. Head Diameter | Approx. Head Height | Allen Key Size |
|---|---|---|---|---|---|
| ¼" BSF | 26 TPI | ⅞" (22.225mm) | 0.42" (10.67mm) | 0.14" (3.56mm) | 5/32" |
| ½" BSF | 16 TPI | ⅞" (22.225mm) | 0.88" (22.35mm) | 0.26" (6.60mm) | 5/16" |
Head dimensions are approximate guides. Metric values are conversions of the listed imperial measurements.
Key Features
- BSF threads for matching British Standard Fine nuts and tapped holes.
- Rounded button head for a neat, compact appearance.
- Internal hexagon socket for Allen key installation.
- High tensile steel construction with a self colour finish.
Typical Applications
Suitable for machinery repairs, workshop maintenance, restoration projects and assemblies using BSF threaded components.
Ordering
Select the required thread size, length and pack quantity from the available options. Check the thread diameter, pitch and head clearance against your assembly before ordering.
