Boring Bar, 3/8" Indexable, HSS Triangle Inserts, A R Warner Kit #12Made in United States

Boring Bar, 3/8" Indexable, HSS Triangle Inserts, A R Warner Kit #12
  • 3/8" diameter, 5" long boring bar with TPMW- insert
  • 2 extra TPMW- high speed steel inserts
  • 1 extra Torx screw
  • 1 wrench
Part Number: 1720
Weight: 0.61 lb

Price: $125.00

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This Arthur R. Warner Co. precision boring bar uses high speed steel inserts. Combine the advantages of high speed steel cutting tools with the convenience of indexable tooling.

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 is proud to carry their products.

Chris Chris' Tips
Make sure you get the correct inserts and retaining screws for your indexable turning tools.

Our chart of indexable inserts shows which inserts and which screw to use with each of our indexable tools.

Here's a video that talks about high speed steel tooling.

Overall Length 5.0" (127 mm)
Minimum Bore 0.520" (13.21 mm)
Lead Angle
Back Rake
Insert Relief 11°
IC 0.218" (5.54 mm)
Insert Thickness 0.093" (2.36 mm)
Insert Hole 0.100" (2.54 mm)
Insert Top Opening 0.130" (3.30 mm)
Insert Radius 0.008" (0.20 mm)
Screws CO-2205 S
Wrench T-7


This product works with these products:

This product works with lathes with a 0.375 to 0.5 inch tool bit size including:

  •   Harbor Freight 44859 Central Machinery 8x12 Precision Mini Lathe
  •   Grizzly G0768 8x16 Benchtop Lathe
  • 3536 HiTorque 8.5x16 Bench Lathe
  •   SIEG C4 8.5x16 Bench Lathe
  •   SIEG SC4 8.5x16 Bench Lathe
  •   Travers Tools OT218410 OTMT 8x16 Bench Lathe
  • 3540 HiTorque 8.5x20 Bench Lathe
  • 3595 HiTorque 8.5x20 Deluxe Bench Lathe
  • 7500 HiTorque 8.5x20 Bench Lathe
  • 7550 HiTorque 8.5x20 Deluxe Bench Lathe
  •   BD-920N Jet 9x20 Lathe
  •   Grizzly G4000 9x19 Bench Lathe
  •   Harbor Freight 45861 Central Machinery 9x20 Bench Lathe
  •   Busy Bee Tools CX705 Craftex 10x21 Lathe Mill Combo
  •   Grizzly G0516 10x21 Lathe Mill Combo
  •   SIEG M6 10x21 Lathe Mill Combo