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Threading Tool, Internal, 1/2" Indexable HSS Triangle Inserts, A R Warner Kit #20

Threading Tool, Internal, 1/2" Indexable HSS Triangle Inserts, A R Warner Kit - Main image
$119.96 $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 0.5" shank and is 6" long.

Approximately 0.55" minimum hole size.

Uses TPMW-221 and TPMW-222 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 (4.8 / 5 · 5 reviews)

Grace M. ★★★★★

The triangle inserts lock in firmly with zero wiggle, and the indexing marks make repeatable setups quick. I’ve been getting consistently clean threads in 304 stainless without any chatter.

Zoe A. ★★★★★

The holder feels rock-solid in the lathe, and those HSS triangle inserts cut a clean thread on my first try without any chatter. Finishing a batch of 1/2" internal threads was noticeably quicker than with my old tap setup.

Emily D. ★★★★★

The holder took a real beating on my lathe and still holds the HSS inserts dead tight, zero chatter on a 3/4" bore. Nice to see a US-made kit that actually feels like it'll outlast me.