MICRO 100 .463" Min Bore Diam, 1/4" Max Bore Depth, 3/8" Shank Diam., Carbide Tipped Boring Bar
MICRO 100 Carbide Tipped Boring Bar - Tool Material: High Speed Steel with carbide tips   MINIMUM BORING DIAMETER  : 0.463   MAXIMUM BORE DEPTH  :    Shank Diameter : 3/8   Overall Length : 6

MICRO 100 .463" Min Bore Diam, 1/4" Max Bore Depth, 3/8" Shank Diam., Carbide Tipped Boring Bar

Made In The USA
Item #: 21-100-210
Brand: MICRO 100
Minimum Bore: .463"
Maximum Bore Depth: 1/4"
Tool Material: Carbide Tipped

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Tipped with Micro 100 high rupture strength & shock resistant carbide


  • Designed to be used for machining a variety of different sized holes.
  • General purpose carbide tipped tools for various radius turning operations.
  • Right hand cutting applications.
  • May also be employed for milling, boring or other operations.
  • Used in a toolholder for lathe boring applications or they may be mounted in a boring head for boring in a milling machine.
  • Can also be used in other machines as well.
  • Well suited for interrupted cutting.


  • The basic design of these boring bars incorporates a cylindrical body where the tool is the same size from one end to the other, allowing these bars to have considerable strength and rigidity while minimizing vibration, throughout a range of speeds and feeds.
  • Tipped with a proprietary carbide from Micro 100®, offering high rupture strength and shock resistance and resists chipping or breaking very well, under normal machining conditions.

Technical Data

  • Manufactured from high speed steel with carbide tips.
  • Single ended carbide tipped tools.
  • Available with bar diameters of 1/4" to 1" and overall lengths between 4" to 10".
  • Effective minimum boring diameters of .320" to 1.233".
  • Bright finishes.
Micro 100 TBB-375 .463" Bore x 6" Long Carbide Tipped Boring Bar
Product Specifications
Brand MICRO 100
Minimum Bore .463"
Maximum Bore Depth 1/4"
Tool Material Carbide Tipped
Cutting Direction Right Hand
Shank Diameter 3/8"
Finish Coating Bright
Model # TBB-375
Bar Diameter 3/8"
Carbide Tip Length 5/16"
End Type Single
Carbide Tip Thickness 1/16"
First Choice For: Steel
Maximum Bore 1/4"
Carbide Tip Width 1/4"
Overall Length 6"
Prop. 65 Yes
Length 5/16
Series TBB
Minimum Bore Diameter .463"
Thickness 1/16
Tool Height 3/16"
Type Boring Bars
Weight 0.9 lbs.
Width 1/4"
Workpiece Material Range Steel, Stainless Steel
Prop 65 Warning Many metalworking products do contain metals that are included in the latest Prop 65 warning. Exposure to the elements can be harmful. May cause cancer and reproductive harm.

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