Federal contractor · BROOKFIELD, CT

GK MECHANICAL SYSTEMS LLC

GK MECHANICAL SYSTEMS LLC received $137.1K in federal contract obligations in FY2026, on 15 awards (−81% vs FY2025). Since FY2017: $10.8M. Its largest customer was Defense Logistics Agency ($154.5K).

Obligations · FY2026
$137.1K
New awards
15
Sole-source
40%
Single offer
27%
UEI
G58FFJ6F2CA7
Other than small business
Open in the contracts explorerRelationship graph

Spending by fiscal year

Obligations per federal fiscal year (October–September).

  1. 1.1MFY2017
  2. 895.5KFY2018
  3. 1MFY2019
  4. 752.8KFY2020
  5. 1MFY2021
  6. 915.9KFY2022
  7. 3.1MFY2023
  8. 1.1MFY2024
  9. 710.2KFY2025
  10. 137.1KFY2026

Top buying agencies

Obligations in FY2026.

  1. Defense Logistics Agency$154.5K100%
    14 awards
  2. Defense Contract Management Agency-$17.4K0.0%
    1 awards

What was bought · Where the work was performed

Obligations in FY2026.

What was bought

  1. Other equipment & supplies$125.9K92%
  2. Weapons, aircraft, ships & vehicles$11.2K8.2%

Where the work was performed

  1. Western Connecticut Planning Region, CT$137.1K100%

Integrity signals

Shares of the year's obligations, next to the country's.

  • Low competition67%
    US 39% · $91.6K
  • Sole-source awards40%
    US 30% · $54.4K
  • Single-offer competitions27%
    US 8.7% · $37.2K
  • Urgency justifications0.0%
    US 5.1% · $0

A signal is a reason to look closer, not evidence of wrongdoing: most sole-source awards are lawful and justified.

Agencies awarding it sole-source contracts

  1. Defense Logistics Agency$54.4K
    Department of Defense · 4 awards

Largest awards

  1. SLEEVE,LOCKING,ELEC$24.4K
    Defense Logistics Agency· Western Connecticut Planning Region, CT· Other equipment & supplies· Feb 20, 2026 – Feb 20, 2026· SPMYM426P1236
  2. 8512116653!INSTALLATION TOOL,R$24K
    Defense Logistics Agency· Western Connecticut Planning Region, CT· Other equipment & supplies· May 18, 2026 – May 18, 2026· SPE4A126V0597
  3. 8511960224!INSTALLATION TOOL,R$18K
    Defense Logistics Agency· Western Connecticut Planning Region, CT· Other equipment & supplies· Mar 17, 2026 – Mar 17, 2026· SPE4A626PH791
  4. 8511953100!SLEEVE,LOCKING,ELEC$16.2K
    Defense Logistics Agency· Western Connecticut Planning Region, CT· Other equipment & supplies· May 13, 2026 – May 13, 2026· SPE7M526V3142
  5. 8511802346!LOCK,BLADE BOLT,MAI$13.9K
    Defense Logistics Agency· Western Connecticut Planning Region, CT· Weapons, aircraft, ships & vehicles· Dec 9, 2025 – Dec 9, 2025· SPE4A726V1335
  6. 8511982368!SLEEVE,LOCKING,ELEC$12.1K
    Defense Logistics Agency· Western Connecticut Planning Region, CT· Other equipment & supplies· May 13, 2026 – May 13, 2026· SPE7M526V3336
  7. 8512150649!LOCK SET,RIM$10.6K
    Defense Logistics Agency· Western Connecticut Planning Region, CT· Other equipment & supplies· Jun 1, 2026 – Jun 1, 2026· SPE7M426V3976
  8. 8511909459!INSTALLATION TOOL,R$8,985
    Defense Logistics Agency· Western Connecticut Planning Region, CT· Other equipment & supplies· Feb 9, 2026 – Feb 9, 2026· SPE4A626PE905

Subawards

Matched by Unique Entity ID: the first-tier subawards this organization reported as a prime recipient, and those primes reported paying it.

As a prime: who it pays · FY2026

No subawards reported as a prime in FY2026.

As a sub-recipient: who pays it · FY2026

  • Sub-contracts: $52.8K (1 subaward)

1 prime

  1. DEFENSE SYSTEMS AND SOLUTIONS$52.8K100%
    HUNTSVILLE, AL · 1 subaward

By fiscal year

  • FY2021: $0 paid out · $736.7K received
  • FY2022: $0 paid out · $908.9K received
  • FY2023: $0 paid out · $1.1M received
  • FY2025: $0 paid out · $297.4K received
  • FY2026: $0 paid out · $52.8K received

Primes report first-tier subawards of $30,000 or more themselves, and many go unreported (GAO-24-106214). Reporting moved from FSRS to SAM.gov in March 2025 and fewer sub-contracts have been reported since. Amounts are what primes reported; they are never added to prime award totals.

Source: Subawards (first-tier sub-contracts and sub-grants reported under FFATA) (U.S. Department of the Treasury, USAspending.gov (reports filed in SAM.gov, formerly FSRS)), data current to Oct 9, 2026, loaded Oct 9, 2026 · Subawards loaded from FY2021.

Teaming partners

Companies this company reported paying, primes that reported paying it, from FFATA subaward reports.

Companies it pays

No subawards reported to other companies.

Primes that pay it

6 companies · $3.1M reported

  1. ELECTRIC BOAT CORPORATION$1.8M
    GROTON, CT · 12 subawards · Architectural, engineering, and related services
  2. OCEANEERING INTERNATIONAL INC$815.7K
    CHESAPEAKE, VA · 2 subawards · Ship and boat building
  3. HUNTINGTON INGALLS INCORPORATED$307.3K
    PASCAGOULA, MS · 5 subawards · Ship and boat building

Showing the top 3 of each list. Open the profile for potential partners and the full lists.

Primes report first-tier subawards of $30,000 or more themselves, and many go unreported (GAO-24-106214). Reporting moved from FSRS to SAM.gov in March 2025 and fewer sub-contracts have been reported since. Amounts are what primes reported; they are never added to prime award totals.

Source: Subawards (first-tier sub-contracts and sub-grants reported under FFATA) (U.S. Department of the Treasury, USAspending.gov (reports filed in SAM.gov, formerly FSRS)), data current to Oct 9, 2026, loaded Oct 9, 2026 · Subawards loaded from 2021.

Competitors

Companies that win from the same buyers in the same markets: obligations by agency and industry compared over the last three fiscal years.

Compared on 11 markets (agency × industry), FY2024–FY2026.

  1. ADVANCED CNC MANUFACTURING, INC.$876.5K−33% in FY2026
    ODESSA, FL · 59% of this company's obligations are in markets they both serveDefense Logistics Agency · Aerospace product and parts manufacturingDefense Logistics Agency · Hardware manufacturingDefense Logistics Agency · Other general purpose machinery manufacturing+3 more
  2. GTC MACHINING LLC$1.2M−71% in FY2026
    INDIANAPOLIS, IN · 49% of this company's obligations are in markets they both serveDefense Logistics Agency · Aerospace product and parts manufacturingDefense Logistics Agency · Hardware manufacturingDefense Logistics Agency · Other fabricated metal product manufacturing
  3. BRANCOR AVIATION CORP$1.4M+235% in FY2026
    NORTH MIAMI, FL · 52% of this company's obligations are in markets they both serveDefense Logistics Agency · Aerospace product and parts manufacturingDefense Logistics Agency · Hardware manufacturingDefense Logistics Agency · Other fabricated metal product manufacturing+2 more

Showing the top 3 of 25 competitors. Open the profile for the full list.

Who sells to the same buyers in the same markets, not who wins against whom on a given contract. Prime contract obligations by the agency and NAICS code of each award; subawards are never added. A company is a family of legal entities, joined by parent UEI or, in part, by an AI reading of names.

Source: Federal contract transactions (Federal Procurement Data System) (U.S. Department of the Treasury, USAspending.gov), data current to Oct 9, 2026, loaded Oct 9, 2026 · FY2024–FY2026.

Source: Federal contract transactions (Federal Procurement Data System) (U.S. Department of the Treasury, USAspending.gov), data current to Oct 9, 2026, loaded Oct 9, 2026.