9031MEASURING OR CHECKING INSTRUMENTS, APPLIANCES AND MACHINES, NOT SPECIFIED OR INCLUDED ELSEWHERE IN THIS CHAPTER; PROFILE PROJECTORS
HSN heading 9031 falls under Chapter 90 — optical, photographic, cinematographic, measuring, checking, precision, medical or surgical instruments and apparatus; parts and accessories thereof. It breaks down into 6 sub-codes listed below.
Sub-codes under 9031 (6)
903110
MACHINES FOR BALANCING MECHANICAL PARTS
903120
TEST BENCHES
903141
FOR INSPECTING SEMICONDUCTOR WAFERS OR DEVICES (INCLUDING INTEGRATED CIRCUITS) OR FOR INSPECTING PHOTOMASKS OR RETICLES USED IN MANUFACTURING SEMICONDUCTOR DEVICES (INCLUDING INTEGRATED CIRCUITS)
903149
OTHER
903180
OTHER INSTRUMENTS, APPLIANCES AND MACHINES
903190
PARTS AND ACCESSORIES
About HSN heading 9031
The 4-digit code 9031 is an HSN heading — a mid-level grouping that breaks down further into 6-digit sub-headings and 8-digit tariff items. Choose the most specific sub-code that matches your supply so the GST rate, e-invoice schema, and GSTR-1 HSN summary all line up correctly. It sits inside Chapter 90, which covers optical, photographic, cinematographic, measuring, checking, precision, medical or surgical instruments and apparatus; parts and accessories thereof.