Scientific Cutting Tools has expanded the Single Point Thread Mill (SPTM) line with new sizes and lengths. The additional sizes include #5 and 7/16 for UN standards as well as larger M3 and M11 sizes for metric. The new extra long (XL) lengths were created for deeper threads. It is available in both UN and metric. All tools are available uncoated or with AlTiN coating.

The new sizes and lengths join the recent expansion of SPTM tools including the EXJ (External UNJ). The SPTM EXJ is a great economical tool engineered for cutting external UNJ threads. It features a single thread profile that is ideal for keeping side-cutting pressure low.

The non-crest cutting design allows maximum flexibility for plated and non-standard threads. SPTM EXJ tools will cut any size external thread of the pitch listed. It is precision ground for maximum concentricity and meets the standards of MIL-SPEC 8879 and AS8879. SPTM thread mills are also available in Acme and Stub Acme thread forms.