Indianapolis is home to some of the country’s most demanding manufacturers, where aerospace tolerances and automotive production cycles push tools to the limit. NTM’s stubby® boring bars are engineered to deliver dependable, precision results at scale, and are built to perform shift after shift.
Designed and manufactured in the USA, our bars combine rigidity, durability, and cutting-edge compatibility across insert styles. From aerospace castings to automotive engine components, NTM boring bars help Indianapolis machinists keep production moving and specs tight.
Why Indianapolis manufacturers choose NTM boring bars:
From flight-ready machining to fast-turn auto lines, NTM boring bars are the kind of tooling Indianapolis shops depend on.
Our bars are available in multiple diameters and configurations, including coolant-through and solid options, and are compatible with a wide range of inserts—from CNMG and WNMG to CCMT and DCMT styles. Whether you’re working with tight clearances or larger bore requirements, NTM’s catalog supports the flexibility modern shops need.
We also understand that performance on the shop floor starts with design at the engineering table. That’s why our patented Stubby construction isn’t just shorter, it’s smarter. The reduced shank length increases rigidity while minimizing deflection and vibration, giving machinists the confidence to run harder, cut cleaner, and deliver better parts with fewer tool changes.
When the goal is to keep lines moving and rework off the table, every cut counts. NTM boring bars are built to meet that pressure head-on, giving Indianapolis manufacturers the tooling backbone they need to stay ahead in aerospace, automotive, and beyond.
In Indianapolis manufacturing, where automotive precision meets aerospace standards, your tooling partner must deliver performance you can count on—cycle after cycle, part after part. NTM understands these dual demands and consistently delivers tooling solutions that Indianapolis manufacturers depend on for sustained success.
Our reputation in Indianapolis manufacturing is built upon our unwavering commitment to quality, reliability, and proven performance. As a family-owned business with extensive manufacturing expertise, we prioritize building strong partnerships that drive long-term operational efficiency and results.
Why choose NTM for your Indianapolis manufacturing tooling needs?
Ready to elevate your manufacturing operations with precision-engineered boring bars?