Screws, bolts, nuts, washers, rivets and similar fasteners of iron or steel.
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Nuts, Bolts and Screws falls under HSN 7318, in chapter 73 (Articles of iron or steel).
Steel fasteners are heading 7318 and taxed at 18%. Nails, tacks and staples are heading 7317. Fasteners of copper or brass are heading 7415 and of aluminium 7616, all at 18%.
| Code | Description |
|---|---|
| 731812 | Other wood screws |
| 731814 | Self tapping screws |
| 731815 | Other screws and bolts |
| 731816 | Nuts |
| 731822 | Other washers |
The GST rate on nuts, bolts and screws is 18%.
| GST rate | Within a state | Between states |
|---|---|---|
| 18% | CGST 9% + SGST 9% | IGST 18% |
Compare other goods on the GST rates list.
The number of digits depends on your aggregate turnover in the previous financial year.
| Turnover last year | Digits | Write |
|---|---|---|
| Up to Rs 5 crore | 4 on B2B invoices, optional on B2C | 7318 |
| Above Rs 5 crore | 6 on every invoice | 731812, 731814, 731815 |
| Export or import | 8 on the shipping bill or bill of entry | From the Customs Tariff, chapter 73 |
Here is how a line for nuts, bolts and screws looks on a tax invoice within one state: 1000 × piece at Rs 6.00 each, taxed at 18%. The figures are an example, not a market price.
| Item | HSN | Qty | Rate (Rs) | Taxable (Rs) | CGST (Rs) | SGST (Rs) | Total (Rs) |
|---|---|---|---|---|---|---|---|
| Nuts, Bolts and Screws | 7318 | 1000 × piece | 6.00 | 6,000.00 | 540.00 | 540.00 | 7,080.00 |
Sold to a buyer in another state, the same line carries IGST of Rs 1,080.00 instead of CGST and SGST. Make the full invoice with the GST invoice format: it fills in the tax split, round off and amount in words.
Chapter 73 (Articles of iron or steel) covers: Pipes, tubes, structures, fasteners, utensils and other articles of iron or steel.
Other pages in chapter 73
Products often bought, sold or invoiced together with nuts, bolts and screws:
Nuts, Bolts and Screws falls under HSN 7318: screws, bolts, nuts, washers, rivets and similar fasteners of iron or steel. Common 6 digit codes are 731812 for other wood screws and 731814 for self tapping screws.
18%: CGST 9% plus SGST 9% on a sale within a state, or IGST 18% on a sale between states.
If your aggregate turnover in the previous financial year was up to Rs 5 crore, write the 4 digit code 7318 on B2B invoices (optional on B2C invoices). Above Rs 5 crore, write 6 digits, such as 731812, on every invoice. Shipping bills and bills of entry need the full 8 digit code from the Customs Tariff.
Rates checked on 13 October 2026 against the GST rate notifications in force (GST 2.0 from 22 September 2025). Descriptions are in our own words and are a guide, not a ruling: for a disputed or high value item, check the notification or ask your tax adviser.