NAICS 333998: All Other Miscellaneous General Purpose Machinery Manufacturing — Federal Contracts

What NAICS 333998 covers

The North American Industry Classification System (NAICS) is the standard the federal government uses to classify the industry of every contractor and every procurement. NAICS 333998 identifies businesses primarily engaged in all other miscellaneous general purpose machinery manufacturing. When a contracting officer publishes a solicitation on SAM.gov, they tag it with the NAICS code that best matches the work — which is why getting your NAICS portfolio right inside SAM is the single most important step for showing up in agency searches.

Who buys NAICS 333998?

The federal agencies awarding the most contract value to vendors in this NAICS, based on 8 contractors tracked in the Mindy contractor database:

1. 1Defense Logistics Agency
2. 2Defense Advanced Research Projects Agency (DARPA)
3. 3Defense Microelectronics Activity (Dmea)
4. 4Defense Information Systems Agency (DISA)
5. 5Departmental Offices

Source: aggregated from the Mindy contractor database (prime contractor disclosures via SBA + agency directories).

Top contractors in NAICS 333998

The largest prime contractors associated with NAICS 333998, ranked by total reported federal contract value. These are your most likely incumbents — and your most likely teaming partners on recompetes:

1. 1
   Northrop Grumman Systems Corporation

   $8.4B total reported value
2. 2
   Northrop Grumman Corporation

   $2.3B total reported value
3. 3
   Sargent Aerospace & Defense LLC

   $41.1M total reported value
4. 4
   Triman Industries INC

   $32.1M total reported value
5. 5
   Triumph Group INC.

   $25.6M total reported value
6. 6
   Laitram L.L.C.

   $3.1M total reported value
7. 7
   Peerless Instrument CO. INC.

   $936K total reported value
8. 8
   Pacific Scientific Company

   $798K total reported value

Values reflect each contractor's aggregate reported federal contract value (across all of their NAICS codes, not just 333998). Use as a ranking signal, not as a per-NAICS award total.