Product Description
BSW Whitworth Countersunk Socket Screws – Self Colour Alloy Steel
High grade alloy steel countersunk socket screws with BSW Whitworth threads and a black self-colour finish. Manufactured to BS 2470, these imperial fasteners feature an internal hexagon drive for installation with a matching Allen key or hex bit.
Product Specifications
| Material | High grade alloy steel |
|---|---|
| Finish | Black self colour, unplated |
| Standard | BS 2470 |
| Thread Type | BSW – British Standard Whitworth |
| Head Style | Countersunk |
| Drive Type | Internal hexagon |
Available Sizes and Drive Details
| Thread Size | Threads Per Inch | Overall Length | Allen Key Size |
|---|---|---|---|
| 5/16" BSW | 18 TPI | 5/8" / 15.875mm | 3/16" |
| 3/8" BSW | 16 TPI | 2" / 50.8mm | 7/32" |
Head Dimensions
| Thread Size | Maximum Theoretical Sharp-Corner Head Diameter | Minimum Head Diameter | Reference Head Height |
|---|---|---|---|
| 5/16" BSW | 0.594" | 0.542" | 0.140" |
| 3/8" BSW | 0.712" | 0.651" | 0.168" |
Key Features
- Alloy steel construction.
- Countersunk head allows a flush finish in a correctly prepared countersink.
- Internal hexagon drive for tightening from above the head.
- Whitworth threads for matching BSW nuts and tapped holes.
Applications
Suitable for restoration, machinery maintenance, tooling and assemblies requiring BSW countersunk socket fasteners.
Length is measured overall, including the countersunk head. Select your required size and pack quantity before ordering.
Standard
BS 2470 – hexagon socket screws.
