NAICS 333998 Quarterly Industry Report
All Other Miscellaneous General Purpose Machinery Manufacturing
Comprehensive industry research for valuation professionals, business owners, buyers, and lenders
NAICS Code: 333998Sector: 33Updated: Q1 2026
About This Report
This Fair Market Value industry profile for NAICS 333998 incorporates Census Bureau[4] establishment data, Bureau of Labor Statistics[5] employment surveys, and SBA[6] size standard information for miscellaneous general purpose machinery. Our research team tracks trade data and procurement records across the diverse product segments within this classification. Quarterly updates ensure this NAICS 333998 profile reflects current Census indicators and SBA regulatory changes.
Industry Snapshot
Key metrics for the all other miscellaneous general purpose machinery manufacturing industry.
Industry Definition & Overview
All Other Miscellaneous General Purpose Machinery Manufacturing (NAICS 333998) encompasses establishments primarily engaged in producing general purpose machinery not classified in other specific NAICS categories within the 3339 industry group. This catch-all classification covers a wide range of products including automatic fire sprinkler systems, baling machinery, bridge and gate lifting machinery, centrifuges, cremating ovens, industrial sieves and screening equipment, hydraulic and pneumatic jacks, industrial filters and strainers, scales and balances, and distillation equipment for non-petroleum applications.
The U.S. Census Bureau[4] identifies a broad base of active establishments across this diverse sector. Because the classification aggregates many distinct product categories, individual market segments vary substantially in size, competitive structure, and end-user profile. Fire sprinkler system manufacturers serve building construction markets. Baling machinery producers supply recycling and agricultural operations. Scale and balance manufacturers target laboratory, retail, and industrial weighing applications. Centrifuge builders serve pharmaceutical, chemical, and food processing clients.
Per the Bureau of Labor Statistics[5], occupations span mechanical engineers, welders, machinists, and assemblers across the varied product segments. Steel, cast iron, stainless steel, bronze, and electronic load cell components represent common material inputs, though specific raw material profiles differ substantially across product lines. Geographic distribution follows general manufacturing patterns, with concentrations in the Midwest, Southeast, and Northeast industrial corridors.
What's Included in This Industry
- Automatic fire sprinkler system manufacturing for commercial and residential buildings
- Baling machinery production for recycling, agricultural, and waste management operations
- Industrial centrifuge manufacturing for chemical, pharmaceutical, and food processing
- Scale and balance manufacturing for laboratory, retail, and industrial weighing
- Industrial filter and strainer production for liquid and air filtration systems
- Hydraulic and pneumatic jack manufacturing for lifting and positioning applications
- Bridge and gate lifting machinery production for infrastructure operations
- Cremating oven manufacturing for funeral service and pet cremation facilities
- Distillation equipment production for chemical processing and beverage applications
- Screening and sieve equipment manufacturing for mineral and aggregate processing
NAICS Classification Hierarchy
| Level | Description | Code |
|---|---|---|
| Subsector | Machinery Manufacturing | 333 |
| Industry Group | Other General Purpose Machinery Manufacturing | 3339 |
| NAICS Industry | All Other General Purpose Machinery Manufacturing | 33399 |
| National Industry | All Other Miscellaneous General Purpose Machinery Manufacturing | 333998 |
Related NAICS Codes
| Code | Description | Relationship |
|---|---|---|
| 333994 | Industrial Process Furnace and Oven Manufacturing | Manufactures industrial process furnaces and ovens classified separately from cremating ovens and specialty thermal equipment produced under this miscellaneous category |
| 333912 | Air and Gas Compressor Manufacturing | Produces air and gas compressors that power pneumatic jacks and compressed air systems manufactured within this broad general purpose machinery classification |
| 333993 | Packaging Machinery Manufacturing | Manufactures packaging machinery classified separately from baling, strapping, and bundling equipment produced under this miscellaneous machinery category |
| 333914 | Measuring, Dispensing, and Other Pumping Equipment Manufacturing | Produces measuring and dispensing pumps classified distinctly from scales, balances, and other measurement equipment manufactured in this classification |
| 332919 | Other Metal Valve and Pipe Fitting Manufacturing | Manufactures other metal valves and fittings including industrial strainer bodies and filter housings used alongside filtration equipment from this sector |
| 333922 | Conveyor and Conveying Equipment Manufacturing | Produces conveyor equipment classified separately from material screening, sieving, and sorting machinery manufactured within this miscellaneous category |
SBA Lending Summary
128
Total SBA Loans
$115.5M
Total Loan Volume
$903K
Average Loan Size
12 yrs
Average Loan Term
9.60%
Average Interest Rate
1,280
Jobs Supported
Source: SBA 7(a) Program Data, U.S. Small Business Administration — FY 2025[3]
Key Insight: The SBA[6] classifies NAICS 333998 with a size standard of 700 employees. Given the diverse product mix within this classification, most individual manufacturers focus on specific equipment categories and operate with workforces well under this threshold. Qualifying businesses can access SBA 7(a) loans[7] for production equipment, inventory financing, and facility improvements supporting their specific product lines. Additionally, 504/CDC loans[8] provide long-term, fixed-rate financing for major fixed assets such as real estate and equipment.
Top SBA Lenders
| # | Lender | Loans | Volume | Avg Loan |
|---|---|---|---|---|
| 1 | FinWise Bank | 8 | $27.2M | $3.4M |
| 2 | Pathward National Association | 16 | $25.2M | $1.6M |
| 3 | Newtek Bank, National Association | 8 | $20.0M | $2.5M |
| 4 | U.S. Bank, National Association | 16 | $14.9M | $930K |
| 5 | ACC Capital | 16 | $12.0M | $748K |
Frequently Asked Questions
Common questions about this industry.
What types of businesses fall under miscellaneous general purpose machinery manufacturing?
NAICS 333998 captures manufacturers producing equipment not fitting neatly into other specific machinery codes. Fire sprinkler system makers serve building construction markets. Baling machinery producers target recycling and agricultural waste handling. Centrifuge manufacturers serve pharmaceutical and chemical processing. Scale producers build laboratory balances, truck scales, and retail weighing systems. Industrial filter manufacturers supply liquid and air filtration for factories and processing plants. Each product segment operates as a distinct niche market.
How is the miscellaneous general purpose machinery industry structured?
The U.S. Census Bureau[4] tracks a broad base of establishments across this diverse classification. Because it aggregates many distinct product categories, no single competitive structure defines the entire sector. Fire sprinkler manufacturing has a few dominant firms. Scale manufacturing includes several mid-size players. Centrifuge production involves specialized engineering firms. Most individual companies focus on one or two product categories rather than spanning the full range of equipment covered by this code.
What is the SBA size standard for NAICS 333998?
The SBA[6] assigns a size standard of 700 employees for NAICS 333998. Most manufacturers within this diverse classification operate well below this limit, typically employing 15 to 200 workers in product-specific fabrication facilities. Small business qualification provides access to federal procurement set-asides and SBA-guaranteed financing programs across all product segments.
What NAICS codes are related to this miscellaneous machinery classification?
Industrial furnace manufacturing (333994) covers process furnaces and ovens separately from cremating ovens. Packaging machinery manufacturing (333993) is classified distinctly from baling and strapping equipment. Per the Census Bureau[9], conveyor manufacturing (333922) covers material transport rather than screening and sieving equipment, while air compressor manufacturing (333912) produces equipment powering pneumatic jacks.
What industries purchase miscellaneous general purpose machinery?
Plumbing contractors (238220) install fire sprinkler systems. Recycling facilities (562920) buy baling and screening equipment. Pharmaceutical manufacturers (325411) use centrifuges and filtration systems. Funeral homes (812210) purchase cremating ovens. According to the BLS[10], demand patterns vary by product segment, with construction activity driving sprinkler sales while pharmaceutical investment influences centrifuge and filter equipment orders.
What products and activities does NAICS 333998 specifically cover?
Products include automatic fire sprinkler systems, baling machinery, centrifuges, cremating ovens, industrial filters, hydraulic jacks, pneumatic jacks, bridge lifting machinery, gate lifting machinery, scales, balances, sieves, screening equipment, and non-petroleum distillation equipment. Manufacturing activities include steel fabrication, precision machining, welding, electrical assembly, load cell integration for scales, nozzle threading for sprinklers, and performance testing across all product categories.
Can manufacturers in NAICS 333998 qualify for SBA financing?
Manufacturers with fewer than 700 employees qualify for SBA loan programs[11] including 7(a) loans up to $5 million and 504 real estate financing. Applications vary by product type: sprinkler manufacturers may finance automated brazing equipment; scale producers may invest in calibration laboratories; centrifuge builders may purchase dynamic balancing machines. Working capital lines support raw material procurement across each product segment's specific supply chain requirements.
Where is miscellaneous general purpose machinery manufacturing concentrated?
Geographic distribution follows general manufacturing patterns, with concentrations in the Midwest, Northeast, and Southeast according to Census geographic data[12]. Ohio, Illinois, Pennsylvania, and Wisconsin host multiple manufacturers across different product segments. Fire sprinkler production clusters near major construction markets. Scale manufacturing concentrates in the Midwest and Northeast. Centrifuge production locates near pharmaceutical corridors in New Jersey, North Carolina, and Indiana.
Sources & References
Government datasets and editorial sources used in this report.
- [1]U.S. Bureau of Labor Statistics, Quarterly Census of Employment and Wages bls.gov
- [2]U.S. Census Bureau, Economic Census census.gov
- [3]U.S. Small Business Administration, SBA 7(a) Loan Program Data data.sba.gov
- [4]U.S. Census Bureau data.census.gov
- [5]Bureau of Labor Statistics bls.gov
- [6]SBA sba.gov
- [7]SBA 7(a) loans sba.gov
- [8]504/CDC loans sba.gov
- [9]Census Bureau census.gov
- [10]BLS bls.gov
- [11]SBA loan programs sba.gov
- [12]Census geographic data census.gov
Disclaimer
This publication has been prepared by Fair Market Value (“Fair Market Value”) for informational purposes only. It is provided on an “as-is” and “as available” basis. Fair Market Value makes no representations or warranties, express or implied, regarding the merchantability, fitness for a particular purpose, completeness, or accuracy of the data or information contained herein. This publication is not intended to be, and should not be construed as, professional financial, legal, tax, or investment advice. Users should consult with qualified professionals before making any financial or business decisions based on the information presented.
To the extent permitted by law, Fair Market Value disclaims all liability for loss or damage, direct and indirect, suffered or incurred by any person resulting from the use of, or reliance upon, the data in this publication.
Copyright © 2026 Fair Market Value. All rights reserved. All data, information, articles, graphs, and content contained in this publication are copyrighted works and Fair Market Value hereby reserves all rights. No part of this publication may be copied, reproduced, republished, uploaded to a third party, or distributed without the prior written permission of Fair Market Value.