STS Operating Inc.

Northborough, MA Doing business as Sunsource The Hope Group

UEI
GEZPNX8Q2RM3
CAGE
8FWG4
Primary NAICS
423830 Industrial Machinery and Equipment Merchant Wholesalers
SAM.gov registration
Active through

Company facts

Self-certified in SAM.gov
  • For Profit Organization
Entity structure
Corporate Entity (Not Tax Exempt)
Corporate family
  • Sunsource Parent STS Operating, Inc. · Addison, IL RU42J22YFWW5
    • Sunsource
      • Kent Western Integrated Technologies, LLC · Kent, WA XKRMZCLZL2K3
SAM.gov registration date
Physical address
70 Bearfoot Rd, Northborough, MA 01532, USA
Founded
1933
Employees
51-250
Estimated annual revenue
$10M-$50M
Industry
  1. Industrials
  2. Capital Goods
  3. Machinery
  4. Industrial Machinery
SIC code
50 Wholesale Trade – Durable Goods
Profiles

Registration and certifications come from SAM.gov and the SBA; company details from public web sources. Updated .

Contract obligations by fiscal year

Fiscal year Obligated
FY2027 To date $0
FY2026 $0
FY2025 $10,776
FY2024 $27,486

Contract awards

Award Agency Obligated Awarded
Cylinder block scoring 70Z02426PBOST0111 Coast Guard $0
N421585226C034- elbow 45 degree SPMYM125P1548 Land and Maritime (DLA) $7,395
N421585209B100- elbow assembly SPMYM125P1326 Land and Maritime (DLA) $3,381
HPU hose assembly N6660424P0535 Naval Sea Systems Command (Navy) $48,414
N421582119B493 - packing assembly SPMYM122P1977 Land and Maritime (DLA) $1,482

Latest 5 listed here. See the rest on GovTribe.

Contract subawards

Prime contractor Prime award Amount Awarded
Raytheon Company ROMANIA PRODUCTION UCA Gaskets. W31P4Q24C0003 $34,137
Raytheon Company ROMANIA PRODUCTION UCA Gaskets. W31P4Q24C0003 $43,134
Bird-Johnson Propeller Company, LLC DDG 51 ATD PORT BLADE SET Rolls-Royce awards subcontracts for production stock, therefore the amount reflected in this subcontract may or may not be billed… N6449823F4027 $148,910
Raytheon Company THIS REQUIREMENT IS FOR THE PROCUREMENT OF FIVE (5) PATRIOT FIRING UNITS IN SUPPORT OF THE COUNTRY OF SWITZERLAND. Fab, Mold Plast/Rubbr. W31P4Q23C0021 $143,073
Raytheon Company BILATERAL MODIFICATION P00003 TO DELIVERY ORDER SPRRA2-23-F-0054 BASIC CONTRACT SPRBL1-15-D-0017. TO CORRECT THE FOB POINT FROM DESTINATION TO ORIGIN FOR ALL… SPRRA223F0054 $85,844

Latest 5 listed here. See the rest on GovTribe.

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See more similar vendors on GovTribe

About the company

Written by GovTribe AI ·

STS Operating Inc., The Hope Group Division, operating as Sunsource, manufactures industrial motion control components, hydraulic assemblies, and fluid handling equipment for defense platforms as a prime contractor (47% of recent awards) and subcontractor, competing exclusively in full-and-open procurements with no small business set-aside posture. Headquartered in Northborough, Massachusetts, STS Operating is a for-profit corporate entity with a named subsidiary, Western Integrated Technologies LLC, and operates across NAICS categories centered on mechanical power transmission equipment, heat exchangers, hose assemblies, and guided missile component manufacturing.

STS Operating's customer base concentrates on defense platforms supported by Army and Navy supply chains. The Department of the Army Materiel Command Contracting Command at Redstone Arsenal anchors the prime footprint—seven awards with $4.8 million combined potential value—primarily for THAAD (Terminal High Altitude Area Defense) hydraulic cylinder assemblies and heat exchanger coolers, including a $1.027 million delivery order for 2,500 hydraulic cylinder assemblies (awarded January 2022, completed June 2023) and a $308 thousand delivery order for heat exchanger coolers in support of THAAD production at Letterkenny Army Depot (awarded May 2022). The Department of the Navy Naval Sea Systems Command has placed nine purchase orders for small-value hydraulic components, including a 45-degree elbow component ($7,395), elbow assembly ($3,381), and packing assemblies, with one larger $48 thousand purchase order for HPU hose assemblies and missile tube extension/loader hose assemblies awarded in September 2024 under an original small business set-aside that converted to full-and-open on award. A single U.S. Coast Guard purchase order for cylinder block scoring totals $8,000 (awarded May 2026). The Department of the Army Acquisition Support Center and Army Aviation and Missile Life Cycle Management Command account for twelve additional awards of unspecified value.

Recent activity shows volatility—four awards in 2022, two in 2023, thirteen in 2024, five in 2025, and one in 2026—with combined obligations of $21.2 million across a $4.9 million stated potential value ceiling, indicating prior-year accrual of invoiced work. STS Operating's subcontract footprint is dominated by Raytheon Company, where the vendor supplies fabricated rubber and plastic parts, hoses, and gaskets for Patriot missile production, HACM-SCIFIRE hypersonic cruise missile work, and international military assistance programs serving Switzerland, Bahrain, Saudi Arabia, and Qatar. Secondary subs include Bird-Johnson Propeller Company for DDG-51 destroyer blade sets and HX5 LLC for MIT Lincoln Laboratory facility maintenance services. Delivery orders flow through Army IDIQs (W911N221D0006, W911N221D0024) and Navy basic ordering agreements (N6449820G0002) in addition to one Air Force IDC (FA300213D0011). The vendor holds no seats on government-wide contract vehicles.

Quick answers

Is STS Operating Inc. registered in SAM.gov?

Yes. STS Operating Inc.'s SAM.gov registration is active through September 23, 2027.

How much has STS Operating Inc. received in federal contracts?

Federal contracts obligated $10,776 to STS Operating Inc. in fiscal year 2025 and $38,262 in fiscal years 2023 through 2027.

How does STS Operating Inc. rank among federal contractors?

STS Operating Inc. ranked #26 in NAICS 33291, #82 in PSC 4730 and #97 in PSC 47 in FY2025.

What is STS Operating Inc.'s most recent federal award?

STS Operating Inc.'s most recent federal contract award is Cylinder block scoring (70Z02426PBOST0111), from Coast Guard, on May 14, 2026.

On GovTribe

See STS Operating Inc.'s full federal record

  • Federal contract awards
  • IDV awards
  • Subcontracting relationships
  • Funding analysis by agency, NAICS and set-aside
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