Founded in 1946 in Terryville, Connecticut, Iseli Company is the leading supplier of Swiss screw machine products in the country. In conjunction with our Walworth, Wisconsin facility, which has been in operation since 1952, Iseli operates over 350 screw machines in 190,000 square feet of space, and provides the precision machining expertise, technology and workmanship to meet your precision component requirements.


We have complete In house engineering and tooling design capabilities for best service and turnaround.

Industries Served:

  • Valves
  • Electronics
  • Instrumentation
  • Medical
  • Consumer Products
  • Aerospace
  • Defense
  • Automotive

Materials Used:

  • Brass
  • Stainless steel
  • Aluminum
  • Beryllium
  • Copper
  • Cold rolled steels
  • Titanium
  • Monel
  • Plastics
  • And more

Northeast Location
651 Greystone Road
Terryville, CT 06786
Phone: 203.757.9281
Fax: 203.756.9199

Midwest Location
402 North Main St.
Walworth, WI 53184
Phone: 262.275.2108
Fax: 262.275.6094

Asian Facility
West Side, North Area, Yanhe Road
Wulian County, Rizhao City, Shandong, PRC
Wulian Industrial Park 262300

Click here for our ISO Certification

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