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NAICS Code· 335311

NAICS 335311: Power, Distribution, and Specialty Transformer Manufacturing

This U.S. industry comprises establishments primarily engaged in manufacturing power, distribution, and specialty transformers (except electronic components). Industrial-type and consumer-type transformers in this industry vary (e.g., step up or step down) voltage but do not convert alternating to direct or direct to alternating current. Illustrative Examples: Fluorescent ballasts (i.e., transformers) manufacturing Substation transformers, electric power distribution, manufacturing Distribution transformers, electric, manufacturing Transmission and distribution voltage regulators manufacturing Cross-References.Show more

NAICS 335311 – Power, Distribution, and Specialty Transformer Manufacturing encompasses the design, fabrication, and assembly of transformers used to regulate, step up, or step down electrical voltage in power distribution networks and specialized applications. This includes oil-filled and dry-type transformers for military bases, remote field operations, renewable energy installations, and critical infrastructure systems.

169
Active Contracts
$294.7M
Total Obligations (12mo)
2.5K
Awarded Contracts (12mo)
622
Contractors Awarded (12mo)
2
Median Bidders per Award
-12.5%
YoY Growth

Awarded Contractors

Companies that have received federal awards classified under NAICS 335311.

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NAICS 335311 FAQ

Frequently Asked Questions

NAICS code 335311 covers Power, Distribution, and Specialty Transformer Manufacturing. This U.S. industry comprises establishments primarily engaged in manufacturing power, distribution, and specialty transformers (except electronic components). Industrial-type and consumer-type transformers in this industry vary (e.g., step up or step down) voltage but do not convert alternating to direct or direct to alternating current. Illustrative Examples: Fluorescent ballasts (i.e., transformers) manufacturing Substation transformers, electric power distribution, manufacturing Distribution transformers, electric, manufacturing Transmission and distribution voltage regulators manufacturing Cross-References.

Recently Posted in Power, Distribution, and Specialty Transformer Manufacturing

NAICS: 335311
Awarded
DIBBS
TRANSFORMER, POWER
Solicitation # SPE7M2-26-T-5764
The contract is a solicitation issued by the Defense Logistics Agency under solicitation number SPE7M2-26-T-5764 for the procurement of one unit of a power transformer identified by NSN 5950-01-438-0097. The solicitation was posted on July 26, 2026, with a response deadline of August 6, 2026, and is conducted through the DLA Internet Bid Board System (DIBBS). The NAICS code 335311 applies, and delivery is required within 165 days of award, with an original required delivery date of January 9, 2027, and a need ship date of January 19, 2027. The item must be delivered FOB origin to the designated location at New Cumberland, Pennsylvania, with all inspection and acceptance performed by the government at the destination. Packaging must conform to MIL-STD-2073-1E and DLA RP001 standards, with marking compliant with MIL-STD-129, including specific codes for preservation, packaging method, and unit container. The transformer must meet technical specifications outlined in MIL-PRF-27G and MIL-PRF-27/320C and comply with mercury-free requirements per NAVSEA 5100-003D. No unit price or estimated contract value is provided, as pricing is to be submitted by offerors. Contractual obligations are governed by a comprehensive set of Federal Acquisition Regulation (FAR) and Defense Federal Acquisition Regulation Supplement (DFARS) clauses, including mandatory provisions for inspection (FAR 52.246-2), changes (FAR 52.243-1), default (FAR 52.249-8), and subcontracting (FAR 52.244-6). Specialized DFARS clauses govern cybersecurity, including the safeguarding of controlled unclassified information per 252.204-7012, NIST SP 800-171 assessment requirements with deviation 2026-O0025 applied, and limitations on the acquisition of covered defense telecommunications equipment. Hazard communication requires adherence to OSHA standards and the submission of hazard labels for non-exempt materials. Payment must be submitted electronically via Wide Area WorkFlow (WAW
Defense Logistics Agency

POSTED

1 day ago

DEADLINE

N/A
View Details
NAICS: 335311
Awarded
DIBBS
TRANSFORMER, POWER
Solicitation # SPE7M2-26-T-6042
The contract is for the procurement of three power transformers, identified by NSN 5950012975773, under solicitation SPE7M2-26-T-6042 for the Nuclear Reactor Program within the Department of Defense. Delivery is required to Tracy, California, with an original delivery deadline of December 31, 2026, and a need ship date of January 5, 2027, under FOB Origin terms with a 140-day delivery window. The transformers must comply with MIL-PRF-27/320C and MIL-PRF-27G(Sup 1) specifications, including bare item markings that include the contract number, NAWC CAGE code, and part number, unless superseded by associated technical drawings. Packaging must adhere to MIL-STD-2073-1E with dry preservation method 41, no chemical preservation materials, and labeling conforming to MIL-STD-129 utilizing 2D Data Matrix or Code 128 barcodes for traceability. The item is classified as a critical application with mandatory configuration change management and traceability requirements per NAVAIR aircraft launch and recovery standards. Prohibitions are strict: no ozone-depleting chemicals, and mercury or mercury-containing compounds are banned except in specific exempted applications like batteries and instruments per NAVSEA 5100-003D, which also mandates secondary containment for portable mercury devices. The contract incorporates numerous FAR and DFARS clauses covering cybersecurity, hazardous materials, trafficking in persons, employment eligibility, subcontracting, inspection at destination, and safeguarding controlled information. Acceptance occurs at the destination point, inspected per FAR 52.246-2, and all payments must be submitted through the mandatory WAWF system. The offeror must maintain active UEI and CAGE codes, represent small business status if applicable, and comply with all DLA Master List technical and quality requirements referenced in the solicitation. No pricing details are filled in, and the contract type remains unspecified, though it is anticipated to be fixed-price.
Defense Logistics Agency

POSTED

1 day ago

DEADLINE

N/A
View Details
NAICS: 335311
New
DIBBS
WIRING HARNESS
Solicitation # SPE7M1-26-U-5118
This solicitation, issued by DLA Land and Maritime on August 12, 2026, is a Request for Quotations for a one-year Indefinite Delivery Contract (IDC) for the procurement of wiring harnesses, identified by NSN 6150-01-563-0997 and associated with Oshkosh Defense LLC part number 3483630. The contract is designated as a small business set-aside with a maximum value of $350,000 and includes a guaranteed minimum quantity of 19 units. The estimated annual quantity is 129 units, with a minimum delivery order quantity of 32 units. Deliveries are required within 158 days after delivery order award, with terms set at FOB Origin and all performance occurring within the continental United States. Technical and quality requirements are strictly governed by the DLA Master List, and the contract incorporates specific sampling methods such as MIL-STD-1916 or ASQ H1331 to ensure compliance. Packaging must adhere to MIL-STD-2073-1E and RP001 standards, while marking must comply with MIL-STD-129. The contract includes critical regulatory provisions, including the Buy American Act, the Berry Amendment, and DFARS 252.204-7012 for safeguarding covered defense information. Offerors must use the Wide Area WorkFlow (WAWF) system for electronic invoicing and receiving reports. Notably, the government will not accept items produced via additive manufacturing, nor will it accept used, reconditioned, or remanufactured goods. Quotations must be submitted by the August 26, 2026, deadline and must maintain a validity period of at least 90 days.
MARITIME SUPPLY CHAIN

POSTED

1 day ago

DEADLINE

in 3 days
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