Threading Tools

MITGI Thread Mills

Midwest Industrial Tool Grinding Inc. (MITGI) expanded its standard line to include more than 280 thread mills. The tools are available uncoated or with an AlTiN coating. The line includes single-flute, NPTF full-form straight or helical, NPT full-form straight or helical, UN full-form straight or helical, and metric full-form straight or helical thread mills. Specials can be ordered.

Threading Large

Presented as an online supplement to "Threading Large"—the December 2010 Cutting Tool Engineering article about thread milling large bore diameters—Allied Machine & Engineering Corp. provides a quick video demonstration of its AccuThread 856 Threadmill cutting in 6061 aluminum.

Straight Flute Thread Mills

Scientific Cutting Tools Inc. (SCT) stocks UN thread mills for cutting from 4-40 up to 3-1/2-8, as well as NPT, BSPP and BSPT 1/16 to 2½ and up, according to the company based in Simi Valley, Calif. Except for staggered-tooth thread mills, all of SCT's solid-carbide, straight-flute thread mills are crest-cutting, and are used for cutting internal threads only.