Product Description
3/8 Inch BSF Grade R Self Colour Steel Fully Threaded Hexagon Bolts
Grade R high tensile steel hexagon bolts with a fully threaded 3/8 inch BSF shank and black self colour finish. Each bolt has 20 threads per inch and a head stamped R.
Available Sizes
| Thread Size | Length | Threads Per Inch |
|---|---|---|
| 3/8 inch BSF | 3/4 inch | 20 TPI |
| 3/8 inch BSF | 1 inch | 20 TPI |
| 3/8 inch BSF | 1 1/4 inch | 20 TPI |
| 3/8 inch BSF | 1 1/2 inch | 20 TPI |
| 3/8 inch BSF | 2 inch | 20 TPI |
Bolt length is measured from beneath the head to the end of the bolt.
Key Features
- Grade R high tensile steel
- 3/8 inch British Standard Fine thread
- 20 threads per inch
- Fully threaded shank
- Hexagon head marked R
- Black self colour finish
BS 84 provides the reference for the BSF thread form. Please contact us before ordering to confirm compliance certification availability.
Use with matching BSF nuts or tapped holes. Consider suitable corrosion protection where self colour steel will be exposed to moisture.
Related Products
Specifications are intended as a guide. Confirm the required thread size, length and strength grade before ordering.

| A | B | C | D | E |
| 3/8" | 1 1/4" | 9/16" | 17/64" | 20 |
| 3/8" | 1 1/2" | 9/16" | 17/64" | 20 |
| 3/8" | 2" | 9/16" | 17/64" | 20 |
| 3/8" | 3/4" | 9/16" | 17/64" | 20 |
| 3/8" | 1" | 9/16" | 17/64" | 20 |
Picture for illustration only, head will be stamped R
Thread - BSF
Grade - High Tensile Steel (R)
Finish - Black Self Colour Steel