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NAICS Code· 335931

NAICS 335931: Current-Carrying Wiring Device Manufacturing

This U.S. industry comprises establishments primarily engaged in manufacturing current-carrying wiring devices. Illustrative Examples: Bus bars, electrical conductors (except switchgear-type), manufacturing GFCI (ground fault circuit interrupters) manufacturing Lamp holders manufacturing Lightning arrestors and coils manufacturing Receptacles (i.e., outlets), electrical, manufacturing Switches for electrical wiring (e.g., pressure, pushbutton, snap, tumbler) manufacturing Cross-References. Establishments primarily engaged in--Show more

NAICS 335931 – Current-Carrying Wiring Device Manufacturing encompasses the production of electrical components designed to safely conduct, control, and distribute electrical current in mission-critical applications. This includes switches, relays, circuit breakers, connectors, terminal blocks, and other wiring devices engineered for durability under extreme environmental conditions.

481
Active Contracts
$197.2M
Total Obligations (12mo)
4.7K
Awarded Contracts (12mo)
836
Contractors Awarded (12mo)
3
Median Bidders per Award
-26.6%
YoY Growth

Industry Spending Overview

Federal obligations, top contractors and agencies, and related industry codes for NAICS 335931.

AI Industry Description

NAICS 335931 – Current-Carrying Wiring Device Manufacturing encompasses the production of electrical components designed to safely conduct, control, and distribute electrical current in mission-critical applications. This includes switches, relays, circuit breakers, connectors, terminal blocks, and ...

NAICS 335931 – Current-Carrying Wiring Device Manufacturing encompasses the production of electrical components designed to safely conduct, control, and distribute electrical current in mission-critical applications. This includes switches, relays, circuit breakers, connectors, terminal blocks, and other wiring devices engineered for durability under extreme environmental conditions. These components are essential to military vehicle electrical systems, naval vessel control panels, aerospace avionics, and hardened communications infrastructure. In government contracting, this NAICS code supports defense modernization, fleet sustainment, and infrastructure resilience programs, where reliability and compliance with MIL-SPEC standards are non-negotiable. Products in this category must meet stringent performance, thermal, and electromagnetic interference requirements, making manufacturing capabilities tightly aligned with defense and aerospace supply chains. Top contractors in this sector include PMI Industries, Inc., Starwin Industries, LLC, and Marathon Medical Corporation, representing a mix of specialized small businesses and niche manufacturers with deep expertise in high-reliability electrical components. DAP Construction Management LLC and Power Clinic Inc. also appear among leading awardees, suggesting a blend of direct manufacturing and integrated system support roles. The competitive landscape favors firms with AS9100 and ISO 9001 certifications, as well as experience in producing components for military-grade environments. The Department of Defense, particularly through NSWC Philadelphia Division under NAVSEA, is the dominant buyer, driving demand for wiring devices used in naval platforms, submarine systems, and expeditionary equipment. Procurement is tied to shipbuilding, maintenance, and modernization initiatives requiring robust, corrosion-resistant, and vibration-tolerant electrical interfaces. Market opportunities are concentrated among suppliers with proven track records in military qualification processes and rapid prototyping capabilities. Demand remains steady due to lifecycle upgrades of legacy systems and the increasing complexity of electrified military platforms, creating consistent demand for certified, low-volume, high-integrity manufacturers.

Top Contractors

Companies with the highest total award value under NAICS 335931, ranked by dollars won.

Ranked by total awards
CompanyTotal AwardsContracts
ACE ELECTRONICS DEFENSE SYSTEMS, LLC$13.8M40
DRS NETWORK & IMAGING SYSTEMS LLC$7.5M7
ASRC FEDERAL FACILITIES LOGISTICS, LLC$6.9M118
CROWN CLOTHING CO$4.8M30
REV-CAP COMPANY, INC.$4.4M202
ELBITAMERICA, INC.$4.1M3
PHILLIP CABLE MANUFACTURING, INC.$3.8M161
HONEYWELL LIMITED$3.5M1
UNITED STATES TECHNOLOGIES INC$3.2M4
RANTEC POWER SYSTEMS INC.$3.1M2

Top Agencies

Federal agencies directing the most contract spending toward NAICS 335931.

Department Of Defense4,421 awards$138.2M
DLA Aviation111 awards$22.5M
DLA Land And Maritime123 awards$21.3M
Ut DLA Aviation At Ogden5 awards$8.0M
Department Of Defense (dod)18 awards$2.4M
DLA Land Warren7 awards$1.6M
W4GG Hq US Army Tacom3 awards$1.0M
Al DLA Aviation At Huntsville1 award$494K
DLA Maritime - Norfolk4 awards$328K
Department Of The Interior6 awards$323K

Competition

How many companies historically bid on federal awards in NAICS 335931, from bidder counts reported on USAspending.

Moderate Competition

Median 3-5 bidders per reported award. · 106,377 reported awards

Median Bidders

3

Per reported award, all-time

Single-Bid Awards

31%

Share of reported awards with one bidder

10+ Bidder Awards

11%

Share of reported awards with 10+ bidders

Reported Awards

0

94% of 112,945 total awards

How this code compares up the NAICS hierarchy. Parent cohorts pool every code under their prefix, so they are the steadier baseline when a 6-digit sample is thin.

Industry FamilyCompetitionMedian BiddersSingle-BidBidder MixReported Awards
335931This Code
Current-Carrying Wiring Device Manufacturing
Moderate Competition331%
106,37794% of 112,945
33593NAICS Industry
Moderate Competition331%
128,17884% of 152,115
3359Industry Group
Other Electrical Equipment and Component Manufacturing
Usually Single-Bid150%
556,95756% of 998,673
335Subsector
Fewer Bidders244%
910,03064% of 1,420,487
33Sector
Manufacturing
Fewer Bidders244%
16,852,66969% of 24,321,569

Bidder counts reported on past federal awards in this NAICS (USAspending). An open opportunity has no bidders yet, so this is the historical norm for similar work, not a fact about this solicitation. Not all awards report bidder counts, and fewer bidders often means incumbent-held work rather than an easier win. Federal reporting of bidder counts fell from ~96% of awards (FY2016) to ~30% (FY2018 onward); the chart shows shares of reported awards, and washed-out stretches mark years with fewer than 30 of them.

Related NAICS Codes

Industries similar to Current-Carrying Wiring Device Manufacturing, by shared sector, subsector, and industry group.

Battery Manufacturing

This industry comprises establishments primarily engaged in manufacturing primary and storage batter...
335910Same Industry GroupHigh Similarity

Fiber Optic Cable Manufacturing

This U.S. industry comprises establishments primarily engaged in manufacturing insulated fiber optic...
335921Same Industry GroupHigh Similarity

Other Communication and Energy Wire Manufacturing

This U.S. industry comprises establishments primarily engaged in manufacturing insulated wire and ca...
335929Same Industry GroupHigh Similarity

Noncurrent-Carrying Wiring Device Manufacturing

This U.S. industry comprises establishments primarily engaged in manufacturing noncurrent-carrying w...
335932Same Industry GroupHigh Similarity

Carbon and Graphite Product Manufacturing

This U.S. industry comprises establishments primarily engaged in manufacturing carbon, graphite, and...
335991Same Industry GroupHigh Similarity

All Other Miscellaneous Electrical Equipment and Component Manufacturing

This U.S. industry comprises establishments primarily engaged in manufacturing industrial and commer...
335999Same Industry GroupHigh Similarity

Residential Electric Lighting Fixture Manufacturing

This U.S. industry comprises establishments primarily engaged in manufacturing fixed or portable res...
335131Same SubsectorMedium Similarity

Commercial, Industrial, and Institutional Electric Lighting Fixture Manufacturing

This U.S. industry comprises establishments primarily engaged in manufacturing commercial, industria...
335132Same SubsectorMedium Similarity

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NAICS 335931 FAQ

Frequently Asked Questions

NAICS code 335931 covers Current-Carrying Wiring Device Manufacturing. This U.S. industry comprises establishments primarily engaged in manufacturing current-carrying wiring devices. Illustrative Examples: Bus bars, electrical conductors (except switchgear-type), manufacturing GFCI (ground fault circuit interrupters) manufacturing Lamp holders manufacturing Lightning arrestors and coils manufacturing Receptacles (i.e., outlets), electrical, manufacturing Switches for electrical wiring (e.g., pressure, pushbutton, snap, tumbler) manufacturing Cross-References. Establishments primarily engaged in--

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TERMINAL, STUD
Solicitation # SPE4A7-26-T-581U
This contract specifies the procurement of 25 terminal stud items identified by NSN 5940-01-722-1575 under solicitation SPE4A7-26-T-581U, with a delivery requirement of 82 days after award. The technical and quality standards are governed by the DLA Master List of Technical and Quality Requirements, with revisions effective as of the solicitation issue date for simplified acquisitions or the RFP issue date for large acquisitions, unless amended. The contract enforces tailored higher-level quality requirements for both manufacturers and non-manufacturers, mandates compliance with DLA packaging standards, and requires removal of government identification from non-accepted supplies along with physical marking of bare items. Sampling must follow MIL-STD-1916 or ASQ H1331 Table 1, or an equivalent zero-based plan, with specified verification levels or AQLs for critical, major, and minor attributes; unspecified attributes default to major. MIL-STD-105/ASQ Z1.4 may determine sample size but acceptance requires zero non-conformances unless otherwise stated. Mercury and mercury-containing compounds are strictly prohibited unless functional in batteries, fluorescent lights, specific instruments, weapon systems, or NAVSEA-approved reagents; portable fluorescent lamps and instruments containing mercury must be shock-proof and feature a secondary containment boundary per NAVSEA 5100-003D. Technical data associated with this contract is subject to export controls under ITAR or EAR, restricting disclosure to foreign persons regardless of location, and is limited to contractors with approved JCP certification, completion of required DOD export control training, and explicit DLA authorization. The contract is administered by the Department of Defense through the ASC Supplier Oper AE and AF Division, with performance directed to New Cumberland, PA, and primary point of contact Erica Adams at erica.adams@dla.mil.
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Solicitation # SPE7M8-26-T-5216
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WIRING HARNESS
Solicitation # SPE4A6-26-U-3107
The contract pertains to the procurement of a wiring harness identified by part number A06-30881-000 and NSN 6150-01-478-6801, with an estimated quantity of 24 units to be delivered under solicitation SPE4A6-26-U-3107 issued by the Defense Logistics Agency’s ASC Commodities Division. Delivery is required within 34 days after order placement, with FOB Origin terms and no variance allowed in quantity. Inspection and acceptance occur at the destination, governed by stringent quality controls: sampling must comply with MIL-STD-1916 or ASQ H1331 Table 1, or an equivalent zero-based plan, with unspecified attributes deemed major and acceptance requiring zero non-conformances if MIL-STD-105/ASQ Z1.4 is referenced. Verifiable attributes must meet designated verification levels VII, IV, and II corresponding to AQLs of 0.1, 1.0, and 4.0. Packaging and palletization must adhere to ASTM D3951 and MIL-STD-129 for labeling, with priority given to the DLA Master List of Technical and Quality Requirements, which also mandates compliance with RP001 for packaging standards. Technical and quality requirements identified by R or I numbers in the DLA master list are fully incorporated and supersede all other standards unless explicitly overridden. The procurement is subject to the Buy American Act and Berry Amendment, with a reduced threshold of $150,000 for domestic content, and requires adherence to NIST SP 800-171 cybersecurity protocols and compliance with FAR and DFARS clauses covering cybersecurity, trafficking in persons, employment eligibility, equal opportunity, hazardous materials, whistleblower protections, and government information control. All contractors must maintain active SAM registration, submit required representations, and use WAWF for invoice and receiving report submissions. Payment is contingent on proper documentation, and the contract falls under an Indefinite Delivery Contract below the simplified acquisition threshold, with award based on best value considering price and other factors.
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NAICS: 335931
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TERMINAL BOARD
Solicitation # SPE4A7-26-T-688E
This contract is for the procurement of one terminal board, identified as a commercial off the shelf critical application item with NSN 5940012399852 and part number 0412081 from Regal Beloit America, Inc. The agreement specifies a delivery timeframe of five days after order and requires shipping via the fastest traceable means to the Distribution Management Office in Albany, Georgia. The contract mandates strict adherence to DLA packaging and marking standards, including MIL-STD-129 and MIL-STD-2073-1E. Quality assurance is governed by MIL-STD-1916 or ASQ H1331 sampling plans, with a zero-tolerance policy for non-conformances in sample lots. Additionally, the agreement prohibits the intentional addition of mercury or mercury-containing compounds to the hardware, except for specific functional exceptions defined by NAVSEA.
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