Swiss Screw Machine Parts & CNC Turned Parts
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Precision CNC Turned Parts



CNC Swiss Parts up to 1.26" OD

CNC Turned Parts up to 8" OD

Made to Your Specifications

Tight Tolerances



Threaded & Timed Holes

Mating Parts

Eccentric Features

Many Possibilities!

Swiss Screw Machine Products, CNC Turned Parts

 & Centerless Grinding Services

Pioneer Service provides precision CNC Swiss screw machine parts, CNC turned parts and Centerless Grinding Services.  Typical applications include armatures, axles, bolts, bushings, couplings, drive shafts, pins, fasteners, spacers and much more. We have modern CNC Swiss Screw Machines, CNC turning centers as well as single spindle screw machines for simple parts. Our equipment gives us flexibility to makes parts that meet your budget and deadline goals.

We’re focused on providing fast reliable service and top quality parts. We provide precision manufactured parts to the United States, Canada and Mexico.

We know you are in a hurry. You need to source parts with the best delivery, price and quality. You don’t want high minimum order quantities in order to get the price, because you can end up with too much inventory. You need a partner you can trust. You need flexible Just-In-Time delivery.

For our customers, Pioneer Service Inc. is that partner. We can hold inventory on our shelf at agreed upon quantities. We can hold cushion inventory for emergencies, if that is helpful for your business. We price at the EAU quantity, not the release quantity, so you get the best volume price and don’t needlessly fill up your warehouse. We expand and contract to support your needs. We know our job is to keep you, the OEM, up and running.

You can call it KANBAN, a blanket order with releases or Just-In-Time delivery. No matter what the name, you can count on Pioneer Service to provide the machined parts you need, when you need them, in a program that works for your company.

Our pledge is to provide:


  • Rapid responses to your engineering, quoting and production needs
  • Short delivery lead-times are possible due to our extensive raw material selection
  • Quick turn-around on prototypes with a dedicated CNC


  • Upper management’s active involvement in daily operations to make the impossible, possible
  • ISO 9001:2008 Registered since 2003 and quality-focused since inception in 1990


  • Competitive pricing, no extra fees for expedited orders
  • Extra leverage with “supplier diversity” aware automotive and government customers due to our Certified Woman-Owned and Operated Small Business (WBE/WOSB) designation


  • Ability to source everything from simple shafts to a complex CNC part cost effectively due to a range of equipment and centerless grinding services in one place
  • Customized stocking programs for just-in-time delivery requirements

Precision Screw Machine and CNC Turned Components

We look forward to helping you with your short and long-run needs of precision screw machine and CNC turned components.   Materials include steel, stainless steel, tool steel, aluminum, brass and nickel bearing alloys. Our in-house bar straightening assures industry-leading straightness tolerances.

Centerless Grinding

Our centerless grinding services can ensure your components’ surface finish to as low as 6 micro-inches (.15 micron) RMS and outside diameters to within ± 0.0001” (2.5 µm).  Our thru-feed grinding is ideal for cylindrical parts with a major OD, and our in-feed grinding is the optimal way to resolve several features, including burr-free flats and multiple ODs.

Everything produced by Pioneer Service is made in the USA. Contact us here to learn how we can provide you big-business results with a small-business approach.

CNC Swiss machined products * Screw machine parts * screw machine shop * Swiss Lathe products * Swiss screw machine parts * Swiss screw machined parts * Swiss screw machined products



“I see your commitment to quality and your deliveries are excellent. I look forward to continue building this relationship.”
Brad- Oil & Gas
“I am pleased to let you know that everything was perfect. The documentation was solid, the parts were all within specifications, and they assembled as designed. Not even a single part was out of spec. !”
Scott- Medical Device Mfg.
“We got the parts in yesterday afternoon. I opened the box and checked out a few and they looked GREAT! Thanks for all your help, and please pass along our gratitude to your crew as well! AND … thanks for doing such a nice job on the packaging, too.”
Todd- Furniture Mfg.
We have been purchasing shafts for our electric motors from Pioneer Service for decades. Pioneer is one of the best, if not the best, supplier of any product we have ever had. Their consistent quality, aggressive pricing and fast response time is unmatched!
Dave B- Operations Mgr/Sub-fractional AC Motors
Pioneer Service has been a long time supplier and our plants use millions of Pioneer shafts per year. We have had ZERO quality or delivery issues with Pioneer. Forecasting, in our industry, is very difficult and we know we can always rely on Pioneer to expedite our rush orders!
Mike S- Commodity Mgr/Electric Motors Mfg.
“Pioneer Service…fast quotes, clear communication, good quality, attractive pricing. One of my best vendors!”
Jay B- Manufacturing Job Shop