The Day & Zimmermann Group, Inc.
Philadelphia, PA
- UEI
- JV1NFDGGB4S4
- CAGE
- 5U276
- Primary NAICS
- 236210 Industrial Building Construction
- SAM.gov registration
- Active through
Company facts
- FY2025 rankings
- Self-certified in SAM.gov
- Entity structure
- Corporate Entity (Not Tax Exempt)
- Corporate family
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- Philadelphia, PA SZCJXNP2JJ19
- Philadelphia, PA UQLQG289R4N1
- Day And Zimmermann, Incorporated · Philadelphia, PA FVLNN5W55H51
- D3YWGGN19VH5
- UDF1X3F52EG8
- SJ9QGT9NPAG3
- Y3JXG9XU5EA4
- M6DGEM6KY5S8
- TLJ7X9F1NSK9
- Lexington, KY YJ52A45M9LM5
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- SAM.gov registration date
- Physical address
- 1835 Market Street, 1835 Market St #2900, Philadelphia, PA 19103, USA
- Website
- dayzim.com
- Founded
- 1901
- Employees
- 10K-50K
- Estimated annual revenue
- $1B-$10B
- Industry
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- Industrials
- Commercial & Professional Services
- Professional Services
- SIC code
- 73 Business Services
- Profiles
Registration and certifications come from SAM.gov and the SBA; company details from public web sources. Updated .
Contract obligations
Most of The Day & Zimmermann Group, Inc.'s contract dollars go to its subsidiaries: $50.5 million across 1 awardee in PSC 1375 in FY2025.
Contract awards
Latest 5 listed here. See the rest on GovTribe.
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About the company
The Day & Zimmermann Group Inc. is a diversified global corporation providing construction, engineering, staffing, and defense solutions to government and commercial clients. As a complex, multi-subsidiary enterprise, the company delivers critical services across multiple sectors, with a significant focus on federal government contracting. Through its subsidiaries like American Ordnance LLC, The Mason & Hanger Group Inc., and SOC LLC, the company provides a wide range of specialized services including ammunition production, facilities management, architectural and engineering design, protective security, and infrastructure support for military and federal agencies.
The Day & Zimmermann Group Inc. has secured numerous federal contract awards across various domains. Its subsidiaries have been awarded contracts for ammunition production, including manufacturing 155mm M795 projectiles, 81mm and 120mm mortar propelling charges, and Mine Clearing Line Charges for the Department of Defense. The Mason & Hanger Group Inc. has consistently received architectural and engineering service contracts from the U.S. Army Corps of Engineers, providing design and technical support for military facilities, infrastructure upgrades, and range development projects. SOC LLC has been awarded significant protective services contracts for the Department of State's Worldwide Protective Services III program, providing security services for U.S. diplomatic facilities in high-risk environments such as Jerusalem and Qatar. Most of these contracts were awarded on a full and open competitive basis, with no specific small business set-aside designations.
The company holds several substantial Indefinite Delivery Vehicle (IDV) contracts across different agencies. These include a $993.7 million multiple-award IDC with the Army's Program Executive Office Ammunition for 155mm projectile production, a $290 million Worldwide Protective Services III contract with the Department of State, and a $240 million architect-engineer services contract with the U.S. Army Corps of Engineers Savannah District. The Mason & Hanger Group has also secured a $150 million IDV with the USACE Louisville District for design services across Army, Air Force, and civil works projects. American Ordnance LLC holds a $68.4 million single-award IDV for 40 LB Cratering Charges. These contracts demonstrate the company's ability to provide critical, specialized services across defense, diplomatic, and infrastructure domains, with contract periods ranging from 2026 to 2032.
Quick answers
Is The Day & Zimmermann Group, Inc. registered in SAM.gov?
Yes. The Day & Zimmermann Group, Inc.'s SAM.gov registration is active through August 17, 2027.
How does The Day & Zimmermann Group, Inc. rank among federal contractors?
The Day & Zimmermann Group, Inc. ranked #4 in PSC 1375, #26 in PSC 1055 and #37 in NAICS 32592 in FY2025.
What is The Day & Zimmermann Group, Inc.'s most recent federal award?
The Day & Zimmermann Group, Inc.'s most recent federal contract award is Replacement of spence e valve - KBK FB (GSP0206PQ5005), from Region 2 (PBS), on December 12, 2005.
On GovTribe
See The Day & Zimmermann Group, Inc.'s full federal record
- Federal contract awards
- IDV awards
- Subcontracting relationships
- Funding analysis by agency, NAICS and set-aside
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