NAICS 335999 Quarterly Industry Report
All Other Miscellaneous Electrical Equipment and Component Manufacturi
Comprehensive industry research for valuation professionals, business owners, buyers, and lenders
NAICS Code: 335999Sector: 33Updated: Q1 2026
About This Report
This Fair Market Value industry report for NAICS 335999 draws on verified data from the U.S. Census Bureau[5], Bureau of Labor Statistics[7], and the Small Business Administration[8]. Our research team compiles establishment counts, employment data, and SBA eligibility criteria specific to miscellaneous electrical equipment and component manufacturing. Reports are updated quarterly to reflect new Census releases and regulatory changes.
Industry Snapshot
Key metrics for the all other miscellaneous electrical equipment and component manufacturi industry.
Industry Definition & Overview
All Other Miscellaneous Electrical Equipment and Component Manufacturing (NAICS 335999) encompasses establishments primarily engaged in manufacturing industrial and commercial electrical apparatus and equipment not classified in any other specific NAICS code within the electrical equipment sector. Products include uninterruptible power supply (UPS) systems, surge protection devices, power conditioning equipment, fuel cells, capacitors (except electronic), solenoids, electrical contacts, and other specialty electrical components. The U.S. Census Bureau[5] classifies this as a residual category capturing electrical equipment manufacturers not fitting other dedicated codes.
Roughly 739 active businesses operate across approximately 782 establishments employing an estimated 33,100 workers per Census data[6]. The broad scope of this classification produces wide variation in business size, production technology, and end markets. UPS manufacturers serve data centers, hospitals, and financial institutions requiring uninterrupted power. Fuel cell producers target stationary power, material handling, and transportation applications. Surge protection device makers supply electrical panels, telecommunications, and consumer electronics markets.
No single product dominates this diverse classification. Firms range from large UPS system manufacturers with global operations to small specialty shops producing custom solenoids, electromagnetic clutches, or precision electrical contacts for specific industrial OEM applications. Manufacturing processes vary accordingly, from high-volume automated assembly of surge protection devices to hand-wound custom solenoid production and clean-room fuel cell membrane electrode assembly. Product liability and safety certification requirements under UL, CSA, and IEC standards apply across product categories, though specific testing protocols differ by product type and intended application environment.
What's Included in This Industry
- Uninterruptible power supply (UPS) manufacturing
- Surge protection device production
- Fuel cell manufacturing
- Power conditioning equipment production
- Solenoid and electromagnetic device manufacturing
- Electrical contact and connector component production
- Capacitor manufacturing (except electronic)
- Electromagnetic clutch and brake production
- Inverter and converter manufacturing (except electronic)
- Lightning arrestor and voltage limiter production
NAICS Classification Hierarchy
| Level | Description | Code |
|---|---|---|
| Subsector | Electrical Equipment, Appliance, and Component Manufacturing | 335 |
| Industry Group | Other Electrical Equipment and Component Manufacturing | 3359 |
| NAICS Industry | All Other Electrical Equipment and Component Manufacturing | 33599 |
| National Industry | All Other Miscellaneous Electrical Equipment and Component Manufacturing | 335999 |
Related NAICS Codes
| Code | Description | Relationship |
|---|---|---|
| 335910 | Battery Manufacturing | Manufactures batteries that pair with UPS systems for backup power rather than the UPS power electronics, surge protectors, and fuel cells produced in this miscellaneous classification |
| 335313 | Switchgear and Switchboard Apparatus Manufacturing | Produces switchgear and switchboard apparatus for power distribution rather than the power conditioning, surge protection, and specialty electrical devices manufactured here |
| 335314 | Relay and Industrial Control Manufacturing | Manufactures relays and industrial controls for motor operation rather than the solenoids, electromagnetic clutches, and power conversion devices produced in this classification |
| 335991 | Carbon and Graphite Product Manufacturing | Produces carbon and graphite products including electrodes and brushes classified under a separate dedicated code rather than the residual electrical equipment category here |
| 334416 | Capacitor, Resistor, Coil, Transformer, and Other Inductor Manufacturing | Manufactures electronic capacitors, resistors, and inductors for circuit board applications rather than the industrial-grade capacitors and electrical components produced here |
| 335312 | Motor and Generator Manufacturing | Manufactures electric motors and generators classified under a dedicated code rather than the electromagnetic clutches and solenoid actuators produced in this residual category |
Geographic Concentration
Top states by share of national establishments.
| # | State | % Est. | Total Est. |
|---|---|---|---|
| 1 | California | 18.5% | 147 |
| 2 | Florida | 7.2% | 57 |
| 3 | Michigan | 6.7% | 53 |
| 4 | Texas | 6.5% | 52 |
| 5 | Illinois | 5.4% | 43 |
| 6 | New York | 4.7% | 37 |
| 7 | Ohio | 4.3% | 34 |
| 8 | Pennsylvania | 4.2% | 33 |
| 9 | Massachusetts | 3.9% | 31 |
| 10 | New Jersey | 3.5% | 28 |
% Of Establishments
0%
18%
Source: County Business Patterns, U.S. Census Bureau[3]
SBA Lending Summary
232
Total SBA Loans
$177.6M
Total Loan Volume
$766K
Average Loan Size
12 yrs
Average Loan Term
9.33%
Average Interest Rate
2,128
Jobs Supported
Source: SBA 7(a) Program Data, U.S. Small Business Administration — FY 2025[4]
Key Insight: The SBA[8] sets the size standard for NAICS 335999 at 600 employees. Firms below this threshold qualify for small business set-aside contracts and SBA-backed lending programs. Federal procurement includes UPS systems for government data centers and command posts, fuel cells for military field power systems, and surge protection for federal building electrical panels. The SBA's contracting programs[9] support manufacturers pursuing Defense Logistics Agency and General Services Administration electrical equipment contracts. Eligible businesses can access SBA 7(a) loans[10] for working capital, equipment, and acquisition financing, while 504 loans[11] support major fixed-asset purchases including real estate and heavy machinery.
Top SBA Lenders
| # | Lender | Loans | Volume | Avg Loan |
|---|---|---|---|---|
| 1 | The Huntington National Bank | 32 | $43.6M | $1.4M |
| 2 | Old National Bank | 16 | $35.7M | $2.2M |
| 3 | Brookline Bank, a Division of Beacon Bank and Trust | 16 | $26.5M | $1.7M |
| 4 | Evolve Bank and Trust | 8 | $13.7M | $1.7M |
| 5 | Wells Fargo Bank National Association | 8 | $9.4M | $1.2M |
Frequently Asked Questions
Common questions about this industry.
What types of businesses are classified under NAICS 335999?
Manufacturers of electrical equipment not classified elsewhere belong here. Products include UPS systems, surge protectors, fuel cells, power conditioners, solenoids, electromagnetic clutches, industrial capacitors, and electrical contacts per the Census Bureau[5] classification.
How is the miscellaneous electrical equipment industry structured?
Roughly 739 businesses operate across 782 establishments employing an estimated 33,100 workers per Census data[6]. Firms range from large UPS and fuel cell manufacturers with global distribution to small specialty shops producing custom solenoids and precision electrical contacts for specific industrial applications.
What is the SBA size standard for NAICS 335999?
The SBA[8] sets the threshold at 600 employees. Businesses with fewer than 600 average employees qualify as small for federal contracting preferences and SBA-backed financing programs including 7(a) and 504 loans.
What NAICS codes are related to miscellaneous electrical equipment manufacturing?
Related codes include 335910 (Batteries), 335313 (Switchgear), 335314 (Industrial Controls), 335991 (Carbon and Graphite), 334416 (Electronic Capacitors), and 335312 (Motors and Generators). Each covers specific electrical product types that have their own dedicated NAICS classification rather than falling into this residual category.
What industries purchase miscellaneous electrical equipment?
Data centers, electrical contractors, battery manufacturers, switchgear producers, and heavy truck manufacturers interact most directly. UPS system demand from data center construction represents a major revenue source while industrial OEM applications for solenoids, clutches, and custom electrical components provide steady demand from discrete manufacturing sectors.
What activities are included in NAICS 335999?
Activities include manufacturing UPS systems for backup power, producing surge protection devices for electrical panels, assembling fuel cells for stationary and mobile power, fabricating solenoids and electromagnetic actuators, manufacturing industrial-grade capacitors, producing electromagnetic clutches and brakes, and assembling power conditioning and voltage regulation equipment.
Can miscellaneous electrical equipment manufacturers qualify for SBA loans?
Yes, firms below 600 employees qualify for SBA lending programs[9] including 7(a) and 504 loans. Battery integration test systems, fuel cell membrane assembly equipment, automated coil winding machines, and UL-certified safety testing apparatus represent capital investments suited to SBA 504 equipment financing.
Where are miscellaneous electrical equipment manufacturers concentrated?
Firms distribute broadly across the country given the diversity of products in this classification. UPS manufacturers cluster near data center markets in Virginia, Texas, and Ohio. Fuel cell producers concentrate in Connecticut, California, and the Pacific Northwest near clean energy research centers. Custom solenoid and specialty component shops locate near industrial OEM customer concentrations in the Midwest and Southeast.
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. Census Bureau, County Business Patterns census.gov
- [4]U.S. Small Business Administration, SBA 7(a) Loan Program Data data.sba.gov
- [5]U.S. Census Bureau census.gov
- [6]Census data naicslist.com
- [7]Bureau of Labor Statistics bls.gov
- [8]Small Business Administration sba.gov
- [9]SBA's contracting programs sba.gov
- [10]SBA 7(a) loans sba.gov
- [11]504 loans sba.gov
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