Covered by CBAM
7318 15 75: covered by UK CBAM
Imports under commodity code 7318 15 75 are covered by the UK carbon border tax (CBAM), in the iron and steel sector. From 1 January 2027 they count towards the £50,000 threshold, and once you're over it you pay tax on the carbon in them.
- HMRC's description
- Hexagon screws and bolts, of stainless steel “whether or not with their nuts and washers” (excluding with socket head, wood screws, self-tapping screws and screws and bolts for fixing railway track construction material)
- Heading
- 7318: Screws, bolts, nuts, coach screws, screw hooks, rivets, cotters, cotter pins, washers (including spring washers) and similar articles, of iron or steel
- Sector
- Iron and steel
- HMRC's default value
- 6.597 tCO2e per tonne. Of HMRC's 478 iron and steel codes, 91% have a lower one
- Tax per tonne
- About £63.92, with the default value at HMRC's illustrative rate of £9.69 per tCO2e
- For example
- 10 tonnes: about £639.25. 100 tonnes: about £6,392.49
- Exclusions
- None apply to this code
- Your 10-digit code
- Import entries use 10-digit commodity codes. Every code that starts 7318 15 75 is covered
What it means for you
- You only register and pay once your CBAM imports reach £50,000 in 12 months. All covered goods count together, not just this code.
- The tax uses HMRC's default value unless the supplier gives you verified actual emissions for the installation that made the goods, which can be lower. The checker writes the email asking for them.
- If a carbon price was paid where the goods were made, Carbon Price Relief can reduce the tax.
- HMRC sets the rate every quarter from January 2027. Until it does, these figures use its illustrative rate, published 16 October 2026.
Other covered codes under 7318
| Code | Description | Default value (tCO2e per tonne) | Tax per tonne |
|---|---|---|---|
| 7318 11 00 | Coach screws of iron or steel | 3.332 | £32.29 |
| 7318 12 10 | Wood screws of stainless steel (excluding coach screws) | 6.635 | £64.29 |
| 7318 12 90 | Wood screws of iron or steel other than stainless (excluding coach screws) | 2.968 | £28.76 |
| 7318 13 00 | Screw hooks and screw rings, of iron or steel | 3.176 | £30.78 |
| 7318 14 10 | Self-tapping screws, of stainless steel (excluding wood screws) | 5.352 | £51.86 |
| 7318 14 91 | Spaced-thread screws of iron or steel other than stainless | 2.935 | £28.44 |
| 7318 14 99 | Self-tapping screws of iron or steel other than stainless (excluding spaced-thread screws and wood screws) | 3.013 | £29.20 |
| 7318 15 20 | Screws and bolts, of iron or steel “whether or not with their nuts and washers”, for fixing railway track construction material (excluding coach screws) | 3.968 | £38.45 |
| 7318 15 35 | Screws and bolts, of stainless steel “whether or not with their nuts and washers”, without heads (excluding screws and bolts for fixing railway track construction material) | 6.139 | £59.49 |
| 7318 15 42 | Screws and bolts, of iron or steel other than stainless “whether or not with their nuts and washers”, without heads, with a tensile strength of less than 800 MPa (excluding screws and bolts for fixing railway track construction material) | 6.804 | £65.93 |
| 7318 15 48 | Screws and bolts, of iron or steel other than stainless “whether or not with their nuts and washers”, without heads, with a tensile strength of greater than or equal to 800 MPa (excluding screws and bolts for fixing railway track construction material) | 6.770 | £65.60 |
| 7318 15 52 | Screws and bolts, of stainless steel “whether or not with their nuts and washers”, with slotted or cross-recessed heads (excluding wood screws and self-tapping screws) | 4.654 | £45.10 |
| 7318 15 58 | Screws and bolts, of iron or steel other than stainless “whether or not with their nuts and washers”, with slotted or cross-recessed heads (excluding wood screws and self-tapping screws) | 5.915 | £57.32 |
| 7318 15 62 | Hexagonal-socket head screws and bolts, of stainless steel “whether or not with their nuts and washers” (excluding wood screws, self-tapping screws and screws and bolts for fixing railway track construction material) | 6.371 | £61.73 |
| 7318 15 68 | Hexagonal-socket head screws and bolts, of iron or steel other than stainless “whether or not with their nuts and washers” (excluding wood screws, self-tapping screws and screws and bolts for fixing railway track construction material) | 5.686 | £55.10 |
| 7318 15 82 | Hexagon screws and bolts, of iron or steel other than stainless “whether or not with their nuts and washers”, with a tensile strength of less than 800 MPa (excluding with socket head, wood screws, self-tapping screws and screws and bolts for fixing railway track construction material) | 4.796 | £46.47 |
| 7318 15 88 | Hexagon screws and bolts, of iron or steel other than stainless “whether or not with their nuts and washers”, with a tensile strength of greater than or equal to 800 MPa (excluding with socket head, wood screws, self-tapping screws and screws and bolts for fixing railway track construction material) | 6.077 | £58.89 |
| 7318 15 95 | Screws and bolts, of iron or steel “whether or not with their nuts and washers”, with heads (excluding with slotted, cross-recessed or hexagonal head; wood screws, self-tapping screws and screws and bolts for fixing railway track construction material, screw hooks and screw rings) | 5.584 | £54.11 |
| 7318 16 31 | Blind rivet nuts of stainless steel | 5.229 | £50.67 |
| 7318 16 39 | Nuts of stainless steel (excluding blind rivet nuts) | 5.166 | £50.06 |
| 7318 16 40 | Blind rivet nuts of iron or steel other than stainless | 4.726 | £45.79 |
| 7318 16 60 | Self-locking nuts of iron or steel other than stainless | 4.753 | £46.06 |
| 7318 16 92 | Nuts of iron or steel other than stainless, with an inside diameter less than or equal to 12mm (excluding blind rivet nuts and self-locking nuts) | 4.431 | £42.94 |
| 7318 16 99 | Nuts of iron or steel other than stainless, with an inside diameter greater than 12mm (excluding blind rivet nuts and self-locking nuts) | 4.890 | £47.38 |
| 7318 19 00 | Threaded articles, of iron or steel, not elsewhere specified | 3.226 | £31.26 |
| 7318 21 00 | Spring washers and other lock washers, of iron or steel | 2.552 | £24.73 |
| 7318 22 00 | Washers of iron or steel (excluding spring washers and other lock washers) | 4.973 | £48.19 |
| 7318 23 00 | Rivets of iron or steel (excluding tubular and bifurcated rivets for particular uses) | 2.919 | £28.29 |
| 7318 24 00 | Cotters and cotter pins, of iron or steel | 2.902 | £28.12 |
| 7318 29 00 | Non-threaded articles, of iron or steel | 3.283 | £31.81 |
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