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Threading Tool, Internal, 3/8" Indexable, HSS Triangle Inserts, A R Warner Kit #19

Threading Tool, Internal, 3/8" Indexable, HSS Triangle Inserts, A R Warner Kit - Main image
$118.36 $159.95 In stock

This Arthur R. Warner Co. precision tool holder kits use high speed steel or carbide inserts. These are production quality tool holders that are made in the USA. LEARN MORE

This Arthur R. Warner Co. boring bar for single-point cutting internal threads has 0.375" shank and is 5" long.

This tool requires a 0.5" minimum hole size.

Uses TPMW-1.8-1.5-.5 and TPMW-1.8-1.5-1 inserts.

The maximum thread depth is 0.100".

The Arthur R. Warner Co. is a family-owned American manufacturer of high speed steel products with specialization in cutting, shaping, pre-grinding, heat treating, and finish grinding of premium grades of flat high speed steel. Their quality is excellent and LittleMachineShop.com is proud to carry their products.

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Customer Reviews (4.4 / 5 · 5 reviews)

Madison W. ★★★★★

The indexing mechanism clicks into place perfectly—no guesswork. Paired with the HSS triangle inserts, the threads come out clean and consistent every time. This kit feels built to last.

Abigail F. ★★★★★

The HSS triangle inserts seat firmly in the holder with zero wobble, and the 3/8" shank fits my tool post perfectly. Threads came out crisp and consistent on the first pass, exactly what I needed for a production job.

Ella ★★★★★

Bought this for some internal threading work on a small job, and the 3/8" indexable design with HSS triangle inserts made setup way easier than my old solid cutter. The holder feels solid and well-made, and the inserts cut cleanly through mild steel without any chatter.