NAICS Code 336510: Railroad Rolling Stock Manufacturing
National industry
SBA small business size standard: 1,500 employees
Definition
This industry comprises establishments primarily engaged in one or more of the following: (1) manufacturing and/or rebuilding locomotives, locomotive frames, and parts; (2) manufacturing railroad, street, and rapid transit cars and car equipment for operation on rails for freight and passenger service; and (3) manufacturing rail layers, ballast distributors, rail tamping equipment, and other railway track maintenance equipment.
Government contracts for this product: PSC 2250 Track Material, Railroad
Code facts
- Part of
-
-
31-33
-
336
-
3365
- 33651
-
3365
-
336
-
31-33
- Contract awards
- 25 In the last 12 months
- Contract obligations
- $18,431,022 In FY2025
NAICS codes and definitions come from the U.S. Census Bureau, size standards from the SBA and contract spending from SAM.gov/FPDS.
Business activities under NAICS 336510
- Brakes and parts for railroad rolling stock manufacturing
- Buses, trackless trolley, manufacturing
- Industrial locomotives and parts manufacturing
- Light rail cars and equipment manufacturing
- Locomotives manufacturing
- Locomotives rebuilding
- Lubrication systems, locomotive (except pumps), manufacturing
- Mining locomotives and parts manufacturing
- Rail laying and tamping equipment manufacturing
- Railroad cars and car equipment manufacturing
- Railroad cars, self-propelled, manufacturing
- Railroad locomotives and parts (except diesel engines) manufacturing
- Railroad rolling stock manufacturing
- Rapid transit cars and equipment manufacturing
- Rolling stock, railroad, rebuilding
- Streetcars and car equipment, urban transit, manufacturing
- Subway cars manufacturing
Looking for another activity? Search the NAICS code lookup or browse business activities from A to Z.
Contract obligations by fiscal year
| Fiscal year | Obligated |
|---|---|
| FY2027 To date | $1,188,503 |
| FY2026 | $27,389,379 |
| FY2025 | $18,431,022 |
| FY2024 | $21,506,318 |
| FY2023 | $9,195,231 |
Top contractors by obligations
| Rank | Contractor | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | S & S Forest Products, LLC | $17,908,104 | |
| 2 | Eastern R&E CO. LTD | $3,052,986 | |
| 3 | Knds Defence UK LIMITED | $2,598,962 | |
| 4 | Quality Turbocharger Components LLC | $2,074,941 | |
| 5 | Harmer Steel Products Company | $656,776 | |
| 6 | Ognagnus LLC | $588,846 | |
| 7 | Ebenezer Railcar Services, Inc. | $515,475 | |
| 8 | Military Airlift Experts LLC (Milairx Llc) | $278,425 | |
| 9 | Atap Inc. | $242,868 | |
| 10 | Hopkins JR David | $242,135 |
See the full FY2025 ranking of NAICS 336510 contractors, by parent company.
Top funding agencies by obligations
| Rank | Agency | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Department of the Army | $24,594,340 | |
| 2 | Department of Transportation | $3,179,262 | |
| 3 | Defense Logistics Agency | $538,236 | |
| 4 | Department of the Interior | $247,735 | |
| 5 | Department of Commerce | $16,158 | |
| 6 | Department of the Navy | $2,150 |
Top PSC codes by obligations
| Rank | PSC code | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | 2250 Track Material, Railroad | $18,601,816 | |
| 2 | 2220 Rail Cars | $4,264,490 | |
| 3 | 2240 Locomotive and Rail Car Accessories and Components | $2,771,088 | |
| 4 | J022 Maintenance, Repair and Rebuilding of Equipment: Railway Equipment | $2,353,214 | |
| 5 | 4930 Lubrication and Fuel Dispensing Equipment | $537,357 | |
| 6 | 2230 Right-of-Way Construction and Maintenance Equipment, Railroad | $31,610 | |
| 7 | 9670 Iron and Steel Scrap | $16,158 | |
| 8 | 2020 Rigging and Rigging Gear | $2,150 |
Contract obligations by state
| Rank | Place of performance | Obligated, last 12 months | Share |
|---|---|---|---|
| 1 | Illinois | $17,908,704 | |
| 2 | Massachusetts | $1,777,349 | |
| 3 | Oklahoma | $935,201 | |
| 4 | Texas | $886,438 | |
| 5 | New York | $538,659 | |
| 6 | Pennsylvania | $417,081 | |
| 7 | California | $155,340 | |
| 8 | Alabama | $127,539 | |
| 9 | Virginia | $33,760 | |
| 10 | Maryland | $30,538 |
Shares are of everything obligated under NAICS 336510 in the last 12 months before deobligations, including work performed abroad or with no place of performance on record.
Contract opportunities
Show 40 more
Latest 50 of 576 listed here. See the rest on GovTribe.
Size standard history
Federal Register rules that named this code
From the NAICS codes each rule's amendments to 13 CFR 121.201 name. Rules that print their size standard tables as images aren't listed.
Quick answers
What is NAICS 336510?
NAICS 336510 is Railroad Rolling Stock Manufacturing, a national industry in NAICS 31-33, Manufacturing.
What is the NAICS code for locomotives rebuilding?
The NAICS code for locomotives rebuilding is 336510, Railroad Rolling Stock Manufacturing.
What is the NAICS code for subway cars manufacturing?
The NAICS code for subway cars manufacturing is 336510, Railroad Rolling Stock Manufacturing.
What is the NAICS code for railroad rolling stock manufacturing?
The NAICS code for railroad rolling stock manufacturing is 336510, Railroad Rolling Stock Manufacturing.
When did the size standard for NAICS 336510 last change?
The most recent Federal Register rule on record that names NAICS 336510 in the SBA's size standards is "Small Business Size Standards for Manufacturing" (81 FR 4469), published Jan 26, 2016 and effective Feb 26, 2016.
How much do federal agencies spend under NAICS 336510?
Federal contracts under NAICS 336510 obligated $18,431,022 in fiscal year 2025 and $77,710,453 in fiscal years 2023 through 2027.
Who are the largest contractors under NAICS 336510?
The contractors with the most obligated under NAICS 336510 in fiscal years 2026 and 2027 are S & S Forest Products, LLC ($17,908,104); Eastern R&E CO. LTD ($3,052,986); and Knds Defence UK LIMITED ($2,598,962).
Which agencies buy the most under NAICS 336510?
The agencies that obligated the most under NAICS 336510 in fiscal years 2026 and 2027 are Department of the Army ($24,594,340), Department of Transportation ($3,179,262) and Defense Logistics Agency ($538,236).
Which PSC codes are used with NAICS 336510?
The PSC codes with the most obligated under NAICS 336510 in fiscal years 2026 and 2027 are 2250 Track Material, Railroad; 2220 Rail Cars; and 2240 Locomotive and Rail Car Accessories and Components.
Where is the work under NAICS 336510 performed?
By place of performance, the states with the most contract obligations under NAICS 336510 over the last 12 months are Illinois ($17,908,704), Massachusetts ($1,777,349) and Oklahoma ($935,201).
What is the latest contract opportunity under NAICS 336510?
The latest contract opportunity under NAICS 336510 is HY-rail light duty truck, solicitation from MICC Fort Drum, posted November 9, 2026.
On GovTribe
See everything under NAICS 336510
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