Day And Zimmermann, Incorporated

Company facts

FY2025 rankings

Its parent company, The Day & Zimmermann Group, Inc., ranks:

• #4 in PSC 1375
• #26 in PSC 1055
• #37 in NAICS 32592
• #58 in PSC 5342
• #79 in NAICS 3259

Self-certified in SAM.gov

• For Profit Organization

Entity structure

Corporate Entity (Not Tax Exempt)

Other NAICS codes in SAM.gov

• 332993 Ammunition (except Small Arms) Manufacturing
• 541310 Architectural Services
• 541330 Engineering Services

Corporate family

• The Day & Zimmermann Group, Inc. Parent Philadelphia, PA JV1NFDGGB4S4
  • Day & Zimmermann Services
    • American Ordinance Iowa Operation American Ordnance LLC · Middletown, IA QHL5DNL1NUK3
    • Day & Zimmermann International, Inc. Philadelphia, PA KFX8Y6CHEWV5
    • Day & Zimmermann Kansas LLC Parsons, KS NVMPNNCWELG5
    • Day & Zimmermann Lone Star LLC Texarkana, TX W5U1L34L2NE7
    • Dzhc Day & Zimmermann Hawthorne Corporation · Philadelphia, PA K6V6FE8FUEK1
    • Empire Products Inc. Day & Zimmermann Lone Star LLC · Yankton, SD NJ6WGGSBJ997
    • HLY Corporation Philadelphia, PA V6GPDJW3D598
    • Kansas DIV Day And Zimmermann, Incorporated · Parsons, KS FBGTZWY8VVQ1
    • M2 Services Corporation Sunrise Beach Corporation · Reston, VA DGA3QM8Q6717
    • Milan Army Plant American Ordnance LLC · Milan, TN NTPELESCCJ88
    • Rdzm, LLC Middletown, IA JT6RE782ZYK3
    • SOC LLC Reston, VA RC5DWNC4CP73
    • SOC Nevada LLC Hawthorne, NV GL4FZHC71RL6
    • The Mason Company Philadelphia, PA SZ2ULSWFM3L1

SAM.gov registration date

Nov 20, 2007

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

1. Industrials
2. Commercial & Professional Services
3. Professional Services

SIC code

73 Business Services

Profiles

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• Crunchbase

Registration and certifications come from SAM.gov and the SBA; company details from public web sources. Updated Sep 24, 2026.