Nut Bolt HSN Code: Understanding HSN Classifications for Nuts and Bolts
Nuts and bolts are basic fasteners used in almost every industry. They hold machines, structures, furniture and many other products together.
To use the nut bolt HSN code correctly and charge GST without mistakes, traders, hardware dealers and manufacturers need to understand how fasteners are classified under HSN and which GST rates apply after the changes from 22 September 2025.
What Is the Nut Bolt HSN Code?
Under GST, nuts, bolts, screws and similar fasteners are grouped in the chapter that covers articles of iron and steel and other base metal products. This chapter includes many types of fasteners such as nuts, bolts, washers, coach screws and similar threaded products.
The main HSN family for nuts and bolts covers threaded fasteners of iron, steel or other base metals that are used to clamp two or more parts together. This family is used for standard mild steel nuts and bolts as well as many high tensile and stainless steel fasteners.
Washers, spring washers and some special fasteners can also be covered in the same fastener family or in related headings in the iron and steel chapter, depending on their design and use.
Key Nut Bolt HSN Codes and GST Rates after 22 September 2025
| HSN Code | Product Description | Product Type or Variant | GST Rate |
|---|---|---|---|
| 7318 | Screws, bolts, nuts and similar fasteners of iron or steel | Common steel nuts, bolts and set screws | 18% |
| 7318 | Washers and spring washers of iron or steel | Plain and spring washers used with nuts and bolts | 18% |
| 7318 | High strength fasteners | High tensile structural nuts and bolts | 18% |
| 7318 | Stainless steel fasteners | Stainless steel nuts, bolts and washers | 18% |
| 7326 | Other articles of iron or steel | Special foundation bolts and fabricated fastener parts | 18% |
HSN Code for Nuts, Bolts, and Other Fasteners
For most hardware shops and industrial suppliers, nuts, bolts and standard washers are all mapped to the fastener HSN family in the iron and steel chapter. This makes it easy to keep one HSN code for a wide range of sizes and grades.
Small items such as machine screws, hex bolts, dome nuts and flange nuts are usually classified under the same fastener HSN family as long as they are made of iron, steel or stainless steel. Only very specialised parts or assemblies move to related headings for other articles of iron and steel.
In practice, businesses create item codes for each size and grade of nut and bolt but keep the same HSN code and GST rate for the whole fastener range, unless a product clearly belongs to a different heading.
GST on Nuts, Bolts, and HSN Code Classification
Nuts and bolts are treated as standard industrial and hardware goods. They do not fall in the lower slab for essential items or in the high slab for luxury goods. Under the three slab structure from 22 September 2025, fasteners remain in the standard 18% GST slab.
This means that common mild steel nuts and bolts, stainless steel fasteners and high strength structural fasteners are generally taxed at 18% under their fastener HSN codes. There is no general move of these products to the 5% slab.
For billing, hardware dealers and manufacturers assign the correct HSN code to each fastener item in their accounting software and fix the GST rate at 18%. Invoices show the nut bolt HSN code along with size, grade and quantity so that buyers can see the classification and tax clearly.
During GST return filing, outward supplies of nuts, bolts and other fasteners are reported HSN wise. Correct classification helps returns match with e way bills and purchase records and allows recipients to claim input tax credit on fasteners used in machinery, structures and projects.
Conclusion
The nut bolt HSN code places nuts, bolts, screws and many related fasteners in a common fastener family in the iron and steel chapter, while certain special fastener parts can move to related iron and steel headings.
Since nuts and bolts are standard industrial goods, they continue to attract 18% GST under their HSN codes after the changes from 22 September 2025. When suppliers and manufacturers link every fastener item to the correct HSN code and apply the right GST rate in invoices and returns, they keep compliance smooth and reduce the risk of disputes or penalties.
I’m Fazeel Zaidi, a Chartered Accountant based in Prayagraj with 8 years of experience. I specialize in GST and Audits, helping businesses stay compliant and audit-ready. With a B.Com background, I focus on practical, clear guidance that simplifies regulations and supports better decision-making.
Frequently Asked Questions
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What is the HSN code for nut bolts in India?
In India, most nuts and bolts are classified in the fastener HSN family for screws, bolts, nuts and similar products of iron or steel. This family covers common hardware fasteners used in machines, structures and furniture.
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What is the GST rate for nuts and bolts under HSN code?
The GST rate for nuts, bolts and similar fasteners under their fastener HSN codes is usually 18%. They remain in the standard GST slab even after the three slab structure that started from 22 September 2025.
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Are nuts and bolts classified under the same HSN code?
Yes. In most cases, nuts and bolts are classified under the same fastener HSN family, which covers screws, bolts, nuts and washers of iron or steel. Different sizes and grades share this common HSN code for GST purposes.
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How does the GST apply to fasteners like nuts and bolts?
GST on fasteners like nuts and bolts is charged at 18% on the taxable value. Suppliers mention the fastener HSN code and GST amount on invoices, and buyers can claim input tax credit on these fasteners when they are used for business purposes.
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How do manufacturers use the nut bolt HSN code for GST filing?
Manufacturers use the nut bolt HSN code to group all fastener products in their item master and on their invoices. When they file GST returns, they report sales HSN wise so that the tax department and buyers can see clear turnover and tax details for nuts, bolts and related fasteners.