Welcome to Sinn-Tech Inc.

Welcome to Sinn-Tech inc.

Established 1984, Sinn-Tech Inc. is a precision machining company that has been supporting the needs of the manufacturing community for over thirty years. Located in West Babylon, Long Island, NY, we specialize in complex machining, contract manufacturing and assembly work for a multitude of industries including aerospace, military, and medical. We work with various types of material such as but not limited to Inconel, Beryllium Copper, Titanium, Aluminum, Stainless and Plastics.


SINN-TECH has the tools, technology, trained staff and the most modern equipment to ensure conformance with product specifications.

SINN-TECH has the manufacturing skill and experience to verify and maintain quality from start to finish: from raw material inspection to in-process control to first piece approval to final inspection.


SINN-TECH has a full complement of horizontal mills, vertical mills, turning machines, and assembly tools.

Our Mission

"Serve client needs by manufacturing products to specification the first time, every time, on time."

AS 9100C Cert. No. 10012084 ASH09-1

ISO 9001 Cert. No. 10012084 QM08

For the best in precision machining, call the sales department at:

Sinn-Tech Inc.
48 Gleam Street
West Babylon, NY 11704
Phone: (631) 643-1171
Fax: (631) 643-1176