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Contact Dayton T. Brown

DTB Corporate Headquarters, NY

Offices in Pax River, MD and Shelton, CT • Tradeshow and event schedule • Visiting DTB

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Dayton T. Brown’s 32-acre Testing, Engineering and Technical Campus in New York


Hours of Operation

Monday – Friday
8:00 am to 4:30 pm (EST)

Telephone & Fax

General Inquiries:
Toll-Free: (800) 232-6300
Local: (631) 589-6300

Engineering & Test Services:
Customer Service: (631) 244-6429
Sales Assistance: (631) 244-6341
Sales Toll-Free: (800) 837-8456
Fax: (631) 589-3648

Technical Services:
Toll-Free: (866) 300-1701
Fax: (631) 567-8540



General Inquiries:

Engineering & Test Services:

Technical Services:


Mailing Address

Dayton T. Brown, Inc.
1175 Church Street
Bohemia, New York 11716 USA

Dayton T. Brown 32-acre corporate, technical and laboratory campus in New York features the largest and most thoroughly equipped independent engineering and testing laboratory in the U.S. Since 1950, Dayton T. Brown’s staff of engineering, laboratory and technical specialists have provided world-class support solutions to government, military and commercial enterprises around the world.