Lathe Boring Bits | McMaster-Carr

	Cut Type Cut Type

	Boring
	Along-the- Length Turning
	Facing
	Chamfering
	External Threading
	External Grooving
	Grind-Your-Own
	Internal Profiling
	Cutoff
	External Profiling
	Internal Grooving
	Internal Threading

	Cut Direction Cut Direction


Right Hand	Left Hand

Neutral

	Shank Diameter Shank Diameter

	For Use On For Use On

	Shank Type Shank Type


Round	Square

R8 Taper	Rectangular

	Shank Width Shank Width

	Material Material

	Minimum Hole Diameter Minimum Hole Diameter

	Overall Length Overall Length

	Shank Height Shank Height

	For Insert Shape For Insert Shape


Diamond	Triangle

Square	Trigon

Round

	Maximum Hole Depth Maximum Hole Depth

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	Material Grade Material Grade

Micrograin

	Side Cutting Edge Angle Side Cutting Edge Angle

	End Cutting Edge Angle End Cutting Edge Angle

	End Relief Angle End Relief Angle

	Back Rake Angle Back Rake Angle

	For Insert Code For Insert Code

	Side Rake Angle Side Rake Angle

	For Insert Style For Insert Style

934 Products

Lathe Tools

Long-Reach Round-Shank Boring Lathe Tools

The long steel shank on these tools can reach farther inside the workpiece than standard boring tools.

Small-Diameter Round-Shank Boring Lathe Tools

These are the smallest boring tools we offer.

Round-Shank Boring Lathe Tools

Use these tools to enlarge existing holes to precise diameters.

Square-Shank Boring Lathe Tools

Insert the square shank of these tools into the slot of a boring tool holder and use them to enlarge existing holes to precise diameters.

Carbide-Tipped Turning Lathe Tools

Constructed of a carbide tip brazed onto a ground steel shank, these tools are more wear resistant than high-speed steel tools.

Diamond-Tipped Turning Lathe Tools

The diamond tip on these tools offers superior cutting performance on nonferrous and nonmetallic materials, such as aluminum, copper, fiberglass, and plastic.

Long-Reach Internal Profiling Lathe Tools

An extra-long shank provides additional reach.

Internal Profiling Lathe Tools

Contour the interior wall of a hollow workpiece.

Small-Diameter Boring Lathe Tool Sets

These sets contain some of the smallest boring tools we offer.

Boring Lathe Tool Sets

Use these tools to enlarge existing holes to precise diameters.

Long-Reach Boring Lathe Tool Sets

The long steel shank on these tools can reach farther inside the workpiece than standard boring tools.

Carbide-Tipped Turning Lathe Tool Sets

Constructed of a carbide tip brazed onto a ground steel shank, these tools are more wear resistant than high-speed steel tools.

Grind-Your-Own Lathe Tool Blanks

Grind these hardened steel blanks to the size and shape you need.

Boring Lathe Tool Holders

Insert boring tools into a 45° or 90° slot at either end of the holder.

Quick-Change Lathe Tools and Holders

Reduce tooling setup time—install the holder once and alternate between applications by switching out the bit.

Indexable Lathe Tools

Boring Carbide Insert Holders

These holders conform to ANSI standards.

Boring Carbide Insert Holders with Coolant Hole

Deliver coolant through the holder to keep workpieces cool while boring tough materials, such as steel, stainless steel, and nickel-based alloys.

Carbide Inserts for Boring Carbide
Insert Holders with Coolant Hole

Pair one of these inserts with a compatible boring carbide insert holder with coolant hole.

Economy Indexable Boring Carbide Insert Holders

Use these tools to enlarge existing holes to precise diameters. They come with an insert installed. When one edge of the insert dulls, rotate it to use a sharp edge.

Economy Indexable Boring Carbide Insert Holder Sets

These sets have a variety of indexable boring insert holders with carbide inserts and a wood storage stand. When one edge of a tool's insert dulls, rotate it to use a sharp edge to enlarge existing holes to precise diameters.

Economy Indexable Turning Tools

These tools come with carbide inserts installed. When one edge of the insert dulls, rotate it to use a sharp edge.

Economy Indexable Turning Tool Sets

These sets have five indexable turning tools with carbide inserts and a wood storage stand. When one edge of a tool's insert dulls, rotate it to use a sharp edge.

Turning Carbide Insert Holders

Secure carbide inserts inside these holders for stable turning.

Blade-Style Holders for Indexable
Cutoff and Grooving Carbide Inserts

Pair these holders with a tool block for right- and left-hand mounting in a lathe.

Shank-Style Cutoff and Grooving Carbide Insert Holders

Fit these holders directly into a lathe tool post or appropriately sized holder without the need for a tool block.

Carbide Inserts for Internal
Profiling Carbide Insert Holders

Combine a carbide insert with a compatible internal profiling holder to create a tool that can contour the interior wall of a hollow workpiece.

Internal Profiling Carbide Insert Holders

Contour the interior wall of a hollow workpiece when you pair a holder with a compatible insert.

High-Performance Carbide Insert Holders
for Internal Threading and Grooving

Pair these holders with a threading insert or a grooving insert to make cuts on the inside of a hollow workpiece.

Blade-Style Cutoff and Grooving Carbide Insert Holders

Pair these holders with a tool block for right- and left-hand mounting in a lathe.

Shank-Style Holders for Indexable
Cutoff and Grooving Carbide Inserts

Fit these holders directly into a lathe tool post or appropriately sized holder without the need for a tool block.

High-Performance Carbide Insert Holders
for External Threading and Grooving

Pair these holders with a threading insert or a grooving insert to make cuts on the outside of a workpiece.

Machine Tool Holding

Boring Tool Holders for Milling Machines

Instead of widening a hole using a lathe, which turns the workpiece while the cutting tool stays still, use these holders to turn your boring bar in a milling machine and keep the workpiece stationary.

Tool Holder Bushings for CNC Lathes

Increase the diameter of boring bars, drill bits, and other shank-style cutting tools to securely fit CNC lathe tool blocks.

Lathe Tools

Long-Reach Round-Shank Boring Lathe Tools

Small-Diameter Round-Shank Boring Lathe Tools

Round-Shank Boring Lathe Tools

Square-Shank Boring Lathe Tools

Carbide-Tipped Turning Lathe Tools

Diamond-Tipped Turning Lathe Tools

Long-Reach Internal Profiling Lathe Tools

Internal Profiling Lathe Tools

Small-Diameter Boring Lathe Tool Sets

Boring Lathe Tool Sets

Long-Reach Boring Lathe Tool Sets

Carbide-Tipped Turning Lathe Tool Sets

Grind-Your-Own Lathe Tool Blanks

Boring Lathe Tool Holders

Quick-Change Lathe Tools and Holders

Indexable Lathe Tools

Boring Carbide Insert Holders

Boring Carbide Insert Holders with Coolant Hole

Carbide Inserts for Boring CarbideInsert Holders with Coolant Hole

Economy Indexable Boring Carbide Insert Holders

Economy Indexable Boring Carbide Insert Holder Sets

Economy Indexable Turning Tools

Economy Indexable Turning Tool Sets

Turning Carbide Insert Holders

Blade-Style Holders for IndexableCutoff and Grooving Carbide Inserts

Shank-Style Cutoff and Grooving Carbide Insert Holders

Carbide Inserts for InternalProfiling Carbide Insert Holders

Internal Profiling Carbide Insert Holders

High-Performance Carbide Insert Holdersfor Internal Threading and Grooving

Blade-Style Cutoff and Grooving Carbide Insert Holders

Shank-Style Holders for IndexableCutoff and Grooving Carbide Inserts

High-Performance Carbide Insert Holdersfor External Threading and Grooving

Machine Tool Holding

Boring Tool Holders for Milling Machines

Tool Holder Bushings for CNC Lathes

Carbide Inserts for Boring Carbide
Insert Holders with Coolant Hole

Blade-Style Holders for Indexable
Cutoff and Grooving Carbide Inserts

Carbide Inserts for Internal
Profiling Carbide Insert Holders

High-Performance Carbide Insert Holders
for Internal Threading and Grooving

Shank-Style Holders for Indexable
Cutoff and Grooving Carbide Inserts

High-Performance Carbide Insert Holders
for External Threading and Grooving