ENGINE EXPERTISE:
TRUSTED THREADING FOR GAS ENGINES, DIESEL ENGINES AND THEIR COMPONENTS

When Ford launched the first F-Series trucks in 1948—with engines ranging from a 95hp Straight-6 to a 145hp Flathead V-8—Jarvis began producing the precision taps used by their engine manufacturers. Since then, we’ve grown alongside the industry, supporting the shift from cast iron blocks to today’s high-performance gas, diesel, hybrid, and electric powertrains. Our taps are trusted by leading engine OEMs and Tier suppliers to deliver tight-tolerance threads in lightweight, high-strength materials—from CNC centers to high-volume transfer lines. 

We create value by engineering taps optimized for the full threading environment—not just the material. We account for hole preparation, tool holding, machine setup, and coolant delivery to ensure consistent performance and minimal scrap. Whether threading CGI, aluminum, or specialty alloys, Jarvis delivers solutions that increase uptime and repeatability. 

Our support goes beyond the tool. We offer training on thread tolerancing, chip control, and gauging, while tracking tool performance to recommend improvements. With Jarvis, you don’t just get a tap—you gain a technical partner focused on efficiency, precision, and long-term results.