NAICS 336510 · Manufacturing
Railroad Rolling Stock Manufacturing government contracts
279 federal contract awards on file carry NAICS 336510, worth $191.3M between them. Below: where that work is performed, who has been winning it, which agencies buy it, and the solicitations open under this code right now.
What NAICS 336510 covers
Official 2022 classification
- National industry
- 336510 · Railroad Rolling Stock Manufacturing
- NAICS industry
- 33651 · Railroad Rolling Stock Manufacturing
- Industry group
- 3365 · Railroad Rolling Stock Manufacturing
- Subsector
- 336 · Transportation Equipment Manufacturing
- Sector
- 31-33 · Manufacturing
Codes and titles are the U.S. Census Bureau's 2022 NAICS, verbatim. Nothing on this page paraphrases an official title.
SBA size standard
We hold no size standard published for these exact six digits, and we will not put a neighbouring industry's figure here in its place. Sibling codes in the same NAICS family do not always share a standard, and self-certifying against the wrong one is how a bidder ends up claiming a set-aside they do not qualify for. Look 336510 up directly in the SBA table.
13 CFR 121.201— the official size-standard table →Not sure whether you qualify? The free set-aside checker walks the size test and the certification programs one question at a time.
Federal contract awards under NAICS 336510
- Total awarded
- $191.3M
- Awards on file
- 279
- Average award
- $685.5K
- Median award
- $31.9K
- Largest single award
- $17.9M
- Period covered
- Jun 24, 2005 – Aug 4, 2026
$191,252,181
Across all 279 awards read.
Federal contract awards with work performed in the United States under NAICS 336510.
$685,492
Mean of the reported amounts. A handful of very large contracts pull this well above what a typical bidder sees.
$31,921
The middle award. This is the more useful number if you are sizing up whether the work here fits your shop.
$17,908,105
The biggest contract on file for this state.
Period-of-performance start dates on file. Work already awarded runs through Apr 16, 2027.
Who wins NAICS 336510 contracts
The contractors holding the most federal contract dollars under 336510, ranked by total award value across every award on file for this code. It is the top of the list rather than every contractor in the industry: 10 companies are shown. These are the incumbents: your competition if you bid prime, and worth a call about subcontracting or teaming before you chase a prime award of your own.
| Contractor | Awards | Total awarded |
|---|---|---|
| 1CATERPILLAR INCC9C6HPQLL4A8 | 8 | $52,434,67127.4% of total |
| 2EBENEZER RAILCAR SERVICES, INC.ZCA6DX7B3LH8 | 7 | $32,775,42317.1% of total |
| 3NATIONAL RAILWAY EQUIPMENT CO.X4K5LJZ18EH5 | 15 | $18,568,9179.7% of total |
| 4S & S FOREST PRODUCTS, LLCXP9YLL3TNCB9 | 1 | $17,908,1059.4% of total |
| 5EASTERN R&E CO. LTDMUKASJU3UU84 | 3 | $9,302,0714.9% of total |
| 6SHIN SUNG SYSTEM CO,.LTD.J532QMP3M2E4 | 3 | $9,217,2364.8% of total |
| 7SPECSYS INCDTBKDQMGNHV5 | 2 | $7,857,5004.1% of total |
| 8KNOXVILLE LOCOMOTIVE WORKS, INC.Q54XVK3YM6P6 | 1 | $5,850,0003.1% of total |
| 9OGNAGNUS LLCL4UMM2W9B8G1 | 1 | $3,891,6962.0% of total |
| 10INNOVATIVE QUALITY SOLUTIONS, LLCWXP5YFMHKZB6 | 2 | $2,857,4461.5% of total |
Which agencies buy NAICS 336510
Awarding agencies ranked by total contract dollars under this code. An agency at the top of this list runs the same contracting offices, reissues the same requirements, and recompetes the same work on a predictable cycle — learning one buyer well beats chasing every bid badly.
| Awarding agency | Awards | Total awarded |
|---|---|---|
| 1Department of Defense | 219 | $127,918,62266.9% of total |
| 2Department of Transportation | 24 | $59,791,34531.3% of total |
| 3Department of the Interior | 26 | $3,259,8161.7% of total |
| 4Department of Veterans Affairs | 1 | $128,147<0.1% of total |
| 5Department of Commerce | 6 | $109,373<0.1% of total |
| 6Department of State | 3 | $44,878<0.1% of total |
Where NAICS 336510 work is performed
Every award record on file under 336510, by place of performance — where the work happens, not where the winner is headquartered. 9 further awards report no U.S. state we publish a page for, so they are counted in the total above and in no row below.
- Illinois
19 award records
$89,197,185
- New York
26 award records
$33,081,130
- Minnesota
3 award records
$7,883,868
- Oklahoma
36 award records
$7,105,222
- Massachusetts
4 award records
$6,782,155
- Tennessee
2 award records
$5,870,750
- Missouri
10 award records
$2,946,254
- New Hampshire
6 award records
$2,676,207
- Utah
41 award records
$2,477,524
- Pennsylvania
23 award records
$2,140,711
- Wyoming
3 award records
$1,917,981
- North Carolina
2 award records
$1,882,011
- Washington
9 award records
$1,518,075
- Alabama
10 award records
$1,178,134
- Wisconsin
4 award records
$834,283
- South Carolina
2 award records
$661,383
- Colorado
3 award records
$445,648
- Texas
14 award records
$439,647
- Nevada
4 award records
$400,672
- Florida
9 award records
$333,574
- California
8 award records
$242,938
- Maryland
5 award records
$217,489
- Louisiana
5 award records
$207,475
- Ohio
6 award records
$174,044
- Michigan
3 award records
$168,703
- District of Columbia
1 award record
$142,211
- Kentucky
1 award record
$113,740
- Georgia
2 award records
$98,500
- Oregon
2 award records
$94,598
- Virginia
3 award records
$76,560
- Mississippi
1 award record
$46,058
- Arizona
1 award record
$30,840
- Indiana
2 award records
$29,311
Government bids open under NAICS 336510
See more open bids →Awards are history. These are live: solicitations tagged with this code that still have a deadline ahead of them, soonest first, each carrying the agency's own published record — the buyer, the deadline and the documents. Sam's deep workup, the part that names what disqualifies bidders, is published for specialty-trade construction and janitorial and facilities services, and this industry is not in that scope — so we do not publish one here.
Nothing carrying 336510 is open this minute — solicitations come and go daily. Get free alerts below and Sam will email you when one lands.
How to use a NAICS code to win government work
Your NAICS code is not paperwork trivia. It is the hinge the whole federal eligibility question turns on: the buyer assigns one code to the requirement, that code sets the SBA size standard the offers are measured against, and the size standard decides whether your business counts as small — and therefore whether you can compete for the set-aside version of the work at all.
Which means the first question is never “can I do this job”. It is “is this contract classified as work I am registered and sized to do”. A firm that can genuinely perform under 336510 but never listed it on its SAM.gov registration is invisible to the market research a contracting officer does before writing the solicitation, which is where most small-business awards are really decided.
Award history under a code tells you the rest. It shows which agencies actually buy this work and where, which contractors have been holding it, and roughly what it pays — before you spend two weeks on a proposal against an incumbent who has held the contract for nine years. A contract with an end date twelve to eighteen months out is a recompete in the making, and the quiet window before it is posted is when a capability statement and a call to the contracting office are worth more than any proposal you could write later.
None of it works if you are not registered. A federal award requires an active SAM.gov registration with a UEI, and the set-aside on a solicitation decides whether your bid is even read. Both are free to sort out, and both are the most common reason a ready contractor is disqualified on a technicality.
Where this page's facts come from
- The classification. U.S. Census Bureau 2022 NAICS. Codes, titles and the sector hierarchy are reproduced verbatim from the Census files and cross-checked against a second official Census file. Nothing is paraphrased or shortened.
- The size standard. SBA, 13 CFR 121.201. We print a threshold only when it is published for these exact six digits; where it is not, we say so and link the table rather than showing a related industry's figure.
- The award figures. Federal prime contract awards published by USAspending.gov, the government's official spending record. Public record, free, no data vendor in between. Grants, loans and direct payments are excluded — they are not work a contractor competes for — and so is state, county and city purchasing.
- What is not here. This is a portion of federal contracting under 336510, not all of it. Treat these figures as a floor: the real market is larger than what is on this page.
- Missing values. Where USAspending records no amount, agency or recipient, we leave it out instead of filling it in. An award with no reported amount is still counted as an award but enters no total or average, which is why a row's award count can outrun its dollars.
NAICS 336510 — common questions
- What is NAICS code 336510?
- 336510 is the U.S. Census Bureau's 2022 NAICS code for Railroad Rolling Stock Manufacturing, inside the Manufacturing sector and the Transportation Equipment Manufacturing subsector. Federal solicitations carry exactly one NAICS code, and that code is how the buyer classifies the requirement — it decides which size standard applies to the bid and, with it, whether your business counts as small for that contract.
- What is the SBA size standard for NAICS 336510?
- We do not hold a size standard published for these exact six digits, and we will not show you a neighbouring industry's figure in its place — sibling codes in the same NAICS family do not always share a standard, and self-certifying against the wrong one is how a bidder ends up claiming a set-aside they do not qualify for. Look up 336510 directly in 13 CFR 121.201, which lists a threshold for every code.
- Where is NAICS 336510 work performed?
- Illinois leads of the award records on file for this code, with 19 awards. Place of performance is where the work happens, not where the winner is headquartered, so this is the market you would be serving rather than a list of local companies. The full state breakdown is on this page, and each state links to its own award history.
- Who wins NAICS 336510 contracts?
- Of the federal contract awards on file under 336510, CATERPILLAR INC holds the largest total: 8 awards worth $52,434,671. That is a ranking of this dataset, not of every contractor in the industry, and the table above is capped at the 10 largest by award dollars rather than being the whole field. Those companies are your competition if you bid prime and your customers if you subcontract.
- Which agencies buy NAICS 336510?
- Department of Defense accounts for the largest total in this dataset: 219 awards worth $127,918,622. Buyers are creatures of habit — the same contracting offices reissue the same requirements on a predictable cycle, so learning one buyer in your code beats chasing every bid in it.
- Are there open government bids under NAICS 336510 right now?
- Not as of this page load. That is a fact about the feed we track — federal SAM.gov postings plus the state portals we pull — and not a statement that no government anywhere is buying this work today. Join the free alerts and Sam will email you when a solicitation carrying 336510 appears.
- Do I have to use NAICS 336510 to bid?
- You bid what the solicitation says. The buyer assigns one NAICS code to the requirement, and that code — not the list on your SAM.gov registration — sets the size standard your offer is judged against. Your registration should carry every code you can genuinely perform, because that is what buyers filter on during market research, but adding a code you cannot deliver under does not make you eligible for anything.
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Free tools for 336510 contractors
Railroad Rolling Stock Manufacturing contracts by state
Related NAICS codes
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