(812) 376-8286 sales@numagroupinc.com



HTD was founded in 1949 as a specialty die-making company. In the late 1980’s; HTD expanded to provide prototype and piece-work machining services. In 2000 obtained ISO 9002 certification then the following year began performing production machining work for Cummins. In 2011 HTD began providing complete product solutions for proprietary products. HTD is conveniently located in Central Indiana and is recognized as an industry leader in exceptional quality performance.

Services Provided

Customized production flow concepts to fit budget and delivery needs

In-house Tool Making, Tooling Maintenance and Tool Repair

Prototype and Tooling Development

In House Design and Modeling Capability

Reverse Engineering Capabilities

On Site Technical Support and Repair Service

Contract Machining

Production Manufacturing

Equipment List
  • 3 Nakamura CNC Turning Centers
  • 2 Mazak Integrex Mills
  • 6 Citizen Turning Centers
  • 3 Multi Axis Turning Machines
  • 3 Multi Axis Machining Centers
  • 2 Mori Seiki Turning Centers
  • 2 DMU 50 Evolution
  • 5 Vertical Mills
  • Sunnen Hone ML 5000-D
  • Blanchard Surface Grinder
  • CNC Jig Grinder
  • Okuma CNC Horizontal Turning Center