CNC Precision Machining

Precision custom components manufactured to your exact specifications.


Years in Business


Sq. Ft. Facility


Precision-Machined Parts per Month


Satisfied Customers


ISO 9001: 2015

What is Precision Machining?

Precision machining refers to the process by which a machinist uses Computer Numerical Control (CNC) equipment to remove excess raw materials and transform remaining materials into specific shapes and sizes, all the while maintaining tolerance, or dimensional accuracy.

CNC precision machining leverages the latest precision technology, including computer-aided design and computer-aided manufacturing software, to fabricate finished materials according to customers’ exact specifications. These precision-machined components are typically small, with tight tolerances.

cnc precision machining

Precision Machined Components

  • Aluminum
  • Brass
  • High/Low Carbon Steel
  • Copper
  • 300/400 Series Stainless Steel
  • Delrin©
  • Rulon® J
  • Poly Ether Ketone (PEEK)
  • Polytetrafluoroethylene (PTFE)
  • Acrylonitrile Butadiene Styrene (ABS)
  • Teflon™
  • Molybdenum
  • M50
  • 4340
  • 17-4

Our diameter standard tolerances are +/-.001″ and as tight as +/-.0001″ in special features.

Standard length tolerances are +/-.005″ and can also be as tight as +/-.0005″


.024″ to 3″ in diameter

Length of parts depends upon the project. We’ve created parts as long as 12′ and as short as .01″ in length.

Gold, silver, copper, zinc, nickel, and tin plating, as well as anodizing, black oxide, and other surface treatments

What Makes W.H. Bagshaw So Special?

Family Owned & Operated Since 1870

The cornerstone of American manufacturing for over 150 years, our ongoing success is a testament to our commitment to quality, customer service and continuous improvement.

Strict Quality Standards

We’re ISO 9001:2015-certified, so you can rest assured that each item we produce adheres to the highest quality standards.

30+ Swiss CNC Machines

With over 30 Swiss CNC machines in our factory, there’s no precision machining job too big — whatever you need, we have the capacity for it.

Materials On-Hand

Aluminum, brass, 300/400 series stainless steel, Delrin© plastic, molybdenum and more — we offer a wide variety of materials for a wide variety of applications.

Rapid Response Times

We pride ourselves on our responsiveness — you can always expect to hear back from one of our representatives in 24 hours or less.

Made in the USA

We’re big believers in American manufacturing, which is why all of our orders are fulfilled right here in Nashua, NH.


Precision-Machined Components

Precision machining encompasses a number of different machining processes, including turning, milling and lathing. As a result, precision-machined components are suitable for a wide variety of applications across a broad spectrum of industries, including:









Our Process

Our Quality Assurance Process

Here at W.H. Bagshaw, we know that the quality of our work impacts the quality of yours.

That’s why we’ve implemented a strict quality assurance process — including scheduled in-process inspections based on part requirements and first-article inspection reports (upon request) — designed to ensure that every precision-machined component we produce is of the highest caliber and made according to your specifications.

quality assurance image

For added peace of mind, we also offer a complete Production Part Approval Process (PPAP) upon request for any component or order.

Most important, our quality management system is ISO 9001:2015-certified, which demonstrates that our precision machine shop is capable of consistently delivering high-quality parts that meet our customers’ exact requirements.

Take a Virtual Tour of Our Facility

What Can W.H. Bagshaw Do for You?