This means that you'll be able to search for NAICS codes directly (if that's your jam). We'll do the math; let's make better data on public procurement together.
Power Transmission Chain; Matched Gear Sets.
Reduction Gears (FSC 3010).
Possible NAICS Codes
333612 – Speed Changer, Industrial High-Speed Drive, and Gear Manufacturing
333613 – Mechanical Power Transmission Equipment Manufacturing
336413 – Other Aircraft Parts and Auxiliary Equipment Manufacturing
333999 – All Other Miscellaneous General Purpose Machinery Manufacturing
336411 – Aircraft Manufacturing
333618 – Other Engine Equipment Manufacturing
336350 – Motor Vehicle Transmission and Power Train Parts Manufacturing
332991 – Ball and Roller Bearing Manufacturing
332999 – All Other Miscellaneous Fabricated Metal Product Manufacturing
332510 – Hardware Manufacturing