Stephen J Hartman

What they make

• machine parts
• prototypes
• dies
• 5 axis milling
• cnc turning
• cylindrical grinding

NAMED ON THE COMPANY’S OWN WEBSITE, READ JUL 29, 2026

Where it is

Other plants nearby

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Every listed plant in Carroll County

Also at this address

No other federal record shares this street address.

Where this record comes from

2 sources hold this plant, and 8 fields on this page come from them. Each line is one agency’s own record of it: the identifier it is filed under, whether that record shows the plant operating or only that it exists, and when the register first and last saw it there.

• The company’s own websiteOPERATING
  first seen JUL 2026 · last seen SEP 2026
• SAM.gov entity registrationOPERATING
  Record VASHHNTGR4Y9 · first seen DEC 2025 · last seen DEC 2025

What each source says

Every field below, as each source filed it. The value this page shows is marked; where the sources disagree, the field says so. Status is computed from independent sources; nothing here is self-reported unless marked Claimed.

Name

SAM.gov: STEPHEN J HARTMAN · DEC 2025

Street address

SAM.gov: 4646 BARTHOLOW RD · DEC 2025

City

SAM.gov: SYKESVILLE · DEC 2025

State

SAM.gov: MD · DEC 2025

Coordinates

Census geocoder: 39.446355226643,-76.986382108438 · JUL 2026

Website

SAM.gov: http://www.hartmanmachine.com · DEC 2025

CAGE code

SAM.gov: 5NBU5 · DEC 2025

SAM registration expires

SAM.gov: 2026-12-05 · DEC 2025