What is HSN Code 731821?
HSN code 731821 is the Harmonized System of Nomenclature classification for Spring Washers And Other Lock Washers under India's Goods and Services Tax (GST). It is a 6-digit code sitting at the sub-heading (6-digit) level of the HSN hierarchy.
This code belongs to Chapter 73 — Articles Of Iron Or Steel, which is part of Section XV: Base Metals & Articles Thereof. Every GST-registered business supplying spring washers and other lock washers must quote HSN 731821 (or the digit-length required for its turnover) on tax invoices and in GSTR-1.