Quabbin has moved!

Quabbin, Inc. is excited to announce that it has joined forces with Amherst Tool, combining the manufacturing experience and product knowledge of Quabbin, Inc. with Amherst Tool’s machining knowledge and skilled workforce. Going forward, the company will operate as “Quabbin”.

Management is made up of Steve Geiger, President, who previously ran a 100-person medical device machining company, and Joe Kustron, Vice President, who has 20+ years of experience as a business owner, master mold maker, CAM programmer and machinist. Mark LeBoeuf will continue to provide sales support and technical expertise as Chief Engineer. Our main manufacturing employees are continuing with the company.

Quabbin is now located in a 40,000 sq ft facility in Wilton, NH. The new entity has already been approved for ISO 9001, AS9100 and ISO 13485 (quality management, aerospace and medical) certification.

You can continue to reach the company at 978-544-3872 and our individual email addresses will remain the same.

We look forward to serving you with our increased capacity and expanded workforce.


Mark LeBoeuf
Chief Engineer
Work 978-544-3872

Click here for our Gate Component Line Card with Vendor Qualifications (PDF)

Why switch to Q-Blue nuts?

Self-lubricating Q-Blue operator nuts can replace bronze in many gate applications
Q-Blue operator
nuts out-perform
bronze in most
gate applications.

The problem Q-Blue nuts solve:

One of the most common gate operation headaches is maintenance. Traditional bronze nuts require routine lubrication, and the lubricant creates its own issues. Because lubricant is sticky, dirt and debris get stuck in it, plus the lubricant is extruded out over time, both of which cause the friction factor to increase, wearing out the nut and stem. And then it's time to re-lubricate and start the cycle all over again….

How are Q-Blue nuts better than bronze?

As Quabbin, Inc.’s President Mark LeBoeuf wrote recently on LinkedIn, “This isn’t your grandfather’s plastic!” The Q-Blue is machined from an engineered polymer that is strong, has high wear resistance and, most importantly, contains its own lubricant. Is the polymer strong enough for high-load, modulating-gate applications? Yes. The failure of operator nuts is not typically caused by shear forces, it’s caused by wear, so the material doesn’t need to be as strong as bronze, it simply needs to function with an appropriate margin of safety (and we perform the engineering calculations for any gate application). The experience of our customers bears this out. We have made Q-Blue nuts for modulating gates with a stem as large as 4.0” in diameter. The nuts lasted almost two years, whereas the previous bronze nuts were being replaced every 6 months. In short: bronze just can’t compete!

Our Q gage: because size matters!

Quabbin In.'s Q gage for determining thread size for replacement partsOur Q gage will help you determine the threads per inch (TPI) on your system's stem, so that we can match the TPI and the fit exactly. This provides you with the correctly-sized replacement parts you need to get your system back up and running.

We are uniquely qualified to repair your gates, hoists and valves

  • More than 20 years’ experience making components (In fact, our parts may already be in your facility!)

  • We make components to fit gates by all major OEMs, so you get one-stop shopping

  • Replacement components are made to match your system's existing threading

  • Our large part inventory means reduced lead times for you

  • We also offer Field Service and Startup

Gate components that we manufacture include:

Couplings Operator nuts Pedestals
Hoists Wall brackets Seals
Stems Stem guides Wedges
Hand wheels Thrust nuts Stem covers
Cranks Custom manufacturing available Stop nuts