HSN Codes · Chapter 73: Articles of Iron or Steel

HSN Code 731813

Screws, bolts, nuts, coach-screws, screw hooks, rivets, cotters, cotter-pins, washers (including spring washers) and similar articles, of iron or steel — screw hooks and screw rings

Typical GST rate

Varies

Depends on sub-classification

Type

Goods

HSN classification

Code level

6-digit

Sub-heading

Reading code 731813

The first two digits (73) place this code in chapter 73 — Articles of Iron or Steel. Heading 7318 groups the product family, and the remaining digits pin down this specific 6-digit classification. Remember: you can never invent a shorter code by truncating a longer one — only codes that exist in the official tariff are valid.

Pipes and tubes, structures, fasteners, utensils, and every fabricated iron or steel article — one of the highest-traffic HSN chapters.

Parent heading

7318 — Screws, bolts, nuts, washers of iron or steel

More specific codes under 731813

  • 73181300 — Screws, bolts, nuts, coach-screws, screw hooks, rivets, cotters, cotter-pins, washers (including spring washers) and similar articles, of iron or steel — screw hooks and screw rings — screw hooks and screw rings

Related codes in heading 7318

  • 731811 — Screws, bolts, nuts, coach-screws, screw hooks, rivets, cotters, cotter-pins, washers (including spring washers) and similar articles, of iron or steel — coach screws
  • 731812 — Screws, bolts, nuts, coach-screws, screw hooks, rivets, cotters, cotter-pins, washers (including spring washers) and similar articles, of iron or steel — other wood screws
  • 731814 — Screws, bolts, nuts, coach-screws, screw hooks, rivets, cotters, cotter-pins, washers (including spring washers) and similar articles, of iron or steel — self-tapping screws
  • 731815 — Other screws and bolts, whether or not with their nuts or washers
  • 731816 — Screws, bolts, nuts, coach-screws, screw hooks, rivets, cotters, cotter-pins, washers (including spring washers) and similar articles, of iron or steel — nuts
  • 731819 — Screws, bolts, nuts, coach-screws, screw hooks, rivets, cotters, cotter-pins, washers (including spring washers) and similar articles, of iron or steel — other
  • 731821 — Screws, bolts, nuts, coach-screws, screw hooks, rivets, cotters, cotter-pins, washers (including spring washers) and similar articles, of iron or steel — spring washers and other lock washers
  • 731822 — Screws, bolts, nuts, coach-screws, screw hooks, rivets, cotters, cotter-pins, washers (including spring washers) and similar articles, of iron or steel — other washers
  • 731823 — Screws, bolts, nuts, coach-screws, screw hooks, rivets, cotters, cotter-pins, washers (including spring washers) and similar articles, of iron or steel — rivets
  • 731824 — Screws, bolts, nuts, coach-screws, screw hooks, rivets, cotters, cotter-pins, washers (including spring washers) and similar articles, of iron or steel — cotters and cotter-pins

Frequently asked questions

The GST rate under 731813 depends on the specific item and applicable notifications. Check the classification with our HSN code finder and confirm the rate before invoicing.
Businesses with annual aggregate turnover of ₹5 crore or more must report at least 6 digits on e-invoices and e-way bills; below ₹5 crore, 4 digits is the B2B minimum. Exports require 8 digits.
Every line item on a GST tax invoice carries its HSN code alongside the description, quantity, taxable value, and tax breakup. The code also flows into your GSTR-1 HSN summary and e-way bills.

Related tools & guides

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