Over 50 years of quality machining services to the South Western PA Area.

Call us today (724) 539-9431

Capabilities Industry Served

Greater Pittsburgh Area Machining Services

History Of Our Machine Shop

“Business in service to business” – that accounts for the success of O&S Machine Company. Since 1964, Latrobe PA and the nearby regions have been serviced by the machining and manufacturing capabilities of O&S Machine Company.

Organized by Latrobe PA natives John Orzehowski and Richard Stemmler, O&S Machine Company offers expert machining, machine building, fabrication and repair to a wide range of electrical, industrial and public accounts. From its original shop where a few part-time workmen performed lathe and drilling operations, the company has grown to employ a team of tradesmen who now serve a client base that extends throughout Pennsylvania and the eastern United States.

Even today, O&S Machine continues its growth, by expanding its machining capabilities and developing new services to benefit its customers. With regular additions of new equipment, the company continues to improve efficiency, maintain the highest quality and serve with excellence the customers of the Greater Pittsburgh area. O&S Machine is proud to be making its mark in the industry.

Give Us A Call – (724) 539-9431

Machining Capabilities

Our machine shop is willing to take on small custom work jobs, and can handle large order volume as well.
  • CNC Milling

  • Manual Milling

  • Sawing

  • CNC Turning

  • Manual Turning

  • Cranes On-Site

  • Fabrication

  • Drilling

  • Delivery

Industries Served


O&S Machine Company has been providing machining service for the deep and strip mining industry for over fifty years. The machine shop has manufactured and rebuilt car wheels, axles, couplings and many other maintenance parts. Machining and manufacturing also includes a series of electrical explosion proof fittings for deep mining which were designed and engineered by customers.


Our machine shop manufactures components for semi conductors, low and high voltage insulator hardware, molds for epoxy insulators used in power generation plants, copper and aluminum conductors, and buss bars used in electric power generation plants. All components manufactured and machined are designed and engineered per customer specifications.

Pittsburgh Area Electrical Manufacturing | Services

Steel & Transportation

Machining and manufacturing of new and replacement parts for rolling mills and slitting mills for both the bar and sheet metal industry. We have rebuilt gearboxes with bearings, shafts, couplings along with machining many other maintenance parts. Our machine shop also has rebuilt axles and wheels for in plant movement of materials, and light fabrication material handling and storage of products being processed in plant.

Western PA Steel Services

Bottling & Decorative Lighting

We have rebuilt, machined, and remanufactured bottling line components and conveyers. Our machine shop also has experience manufacturing parts for the specialized lighting industry for convention centers, churches, and auditoriums, to customer specifications.

Commercial Lighting | Custom


O&S Machine Company serves the natural gas industry by machining special nipples and sleeves for the transportation of natural gas through medium and high pressure lines. Our manufacturing has also provided replacement parts and maintenance items upon request.