Tower bolts

Tower bolts of base metal for buildings

BIS QCO APPLICABLE · ISI MARK SCHEME · IS 204(part 2)

HSN 8302 41 20 (tower bolts) is covered by a Bureau of Indian Standards Quality Control Order. Conformity to IS 204 (Part 1):1991, IS 204 (Part 2):1992, or IS 15833:2009 — depending on material composition — is mandatory under the ISI Mark Scheme with effect from 12 July 2024, by virtue of the Bolts, Nuts and Fasteners (Quality Control) Order, 2024. No separate customs-clearance overlay applies to this tariff line.

What this is

HSN code

8302 41 20

Chapter

83 · Miscellaneous articles of base metal

BIS QCO

Applicable · ISI Mark Scheme · CM/L required

Indian Standard

IS 204 (Part 2) · effective 12-07-2024

Applicable Partner Government Agencies

BISBIS·Bureau of Indian Standards

Compliance steps

1
Identify the material composition of the tower bolts before sourcing: ferrous metals require IS 204 (Part 1):1991, non-ferrous metals require IS 204 (Part 2):1992, and stainless steel requires IS 15833:2009. The applicable IS number must match the consignment's material exactly.
Bolts, Nuts and Fasteners (Quality Control) Order, 2024 · S.O. 2771(E) dated 12-07-2024
2
Verify the foreign manufacturer's BIS CM/L licence number on the BIS online register against the applicable standard (IS 204 Part 1, IS 204 Part 2, or IS 15833:2009) before placing the purchase order. Confirm the licensed scope covers the specific bolt dimensions, finish, and manufacturing facility.
Bolts, Nuts and Fasteners (Quality Control) Order, 2024 · S.O. 2771(E) dated 12-07-2024
3
Ensure every tower bolt bears the ISI mark and the supplier's CM/L number per Scheme-I of Schedule-II to the BIS (Conformity Assessment) Regulations, 2018. The mark must appear on the product itself; marking on packaging alone does not satisfy the requirement.
Scheme-I of Schedule-II to the BIS (Conformity Assessment) Regulations, 2018 · Bolts, Nuts and Fasteners (Quality Control) Order, 2024
4
Quote the supplier's BIS CM/L number and the applicable IS standard on the bill of entry. Customs verifies the CM/L in real time against the BIS register; an absent, expired, or material-scope-mismatched licence triggers consignment detention.
BIS Act, 2016 · Customs Act, 1962 · S.O. 2771(E) dated 12-07-2024

A word of counsel

The single most common error on this tariff line is presenting a single CM/L licence against one part of IS 204 for a mixed-material consignment. A CM/L against IS 204 (Part 2) covers non-ferrous tower bolts only; ferrous bolts in the same consignment require a separate CM/L against IS 204 (Part 1), and stainless steel bolts require a CM/L against IS 15833:2009. Customs detention of the entire consignment — not merely the non-compliant portion — results when even one material category lacks a valid, scope-matching licence.

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Frequently asked

Does HSN 8302 41 20 require BIS certification?

Yes. Tower bolts are subject to the ISI Mark Scheme under the Bolts, Nuts and Fasteners (Quality Control) Order, 2024, with effect from 12 July 2024. Import is permitted only from manufacturers holding a current BIS CM/L licence against IS 204 (Part 1), IS 204 (Part 2), or IS 15833:2009, as applicable to the material.

Which Indian Standard applies to stainless steel tower bolts?

IS 15833:2009 governs stainless steel tower bolts. IS 204 (Part 1):1991 applies to ferrous metal bolts and IS 204 (Part 2):1992 to non-ferrous metal bolts; each requires a separate, material-specific CM/L licence.

From which date is BIS certification mandatory for tower bolts under this tariff line?

Mandatory compliance under S.O. 2771(E) takes effect from 12 July 2024. Consignments shipped after that date without a valid CM/L-backed ISI mark are liable to detention at the port of import.

Does a single CM/L licence cover all sizes and finishes of tower bolts?

No. A CM/L licence is scope-specific; bolt dimensions, finish, and manufacturing facility must fall within the licensed scope. Variants outside the licensed specification, or produced at an unlicensed plant, are not covered.

Last verified against gazette notifications: 2026-05-18. Source: BIS / Indian Customs CUSDATA.