Boring Tools

Boring tools- LittleMachineShop.com

LittleMachineShop.com has the boring tools you need for your shop. We carry boring tools for your lathe and your mill.

1700 Boring Bar Holder, 1/2"
1/2" Boring bar holder. This simple mini lathe boring bar holder fits in the standard 4-way tool post. It holds boring bars with 1/2" shanks.

1247 Boring Bar Set, 1/2" Shank, Carbide

Set of nine boring bars - 3 lengths for each min. bore size
Shank diameter 1/2"
Hardened and ground to +0" - 0.0005"
Shanks are made of special heat treated alloy steel
Designed so the same bar can bore flat

This carbide tipped 9-piece boring bar set includes three different length boring bars each for minimum bores of 5/16", 7/16", and 9/16". The bore depth ranges from 3/4" to 3". The heat treated, alloy steel shanks are held to 0.000 to -0.0005" from the nominal diameter. The holder may vary from that shown in the photo.

3768 Boring Bar Set, 1/2" Shank, Carbide with Holder for Mini Lathe

Set of nine boring bars - 3 lengths for each min. bore size
Boring bar holder for standard mini lathe tool post
Shank diameter 1/2"
Hardened and ground to +0” - .0005”
Shanks are made of special heat treated alloy steel

2682 Boring Bar Set, 1/2" Shank, HSS

Set of ten boring bars, depth ranges from 3/4" to 2 1/4"
Shank diameter 1/2"
One piece M35 5% Solid Cobalt
Hardened and ground to +0” -0.0005”
Minimum bores of 5/16", 7/16" and 9/16"

This high speed steel 10-piece boring bar set includes boring bars for minimum bores of 5/16", 7/16", and 9/16". The bore depth ranges from 3/4" to 2 1/4". The boring bars are made from M35 5% cobalt high speed steel. The shanks are held to 0.000 to -0.0005" from the nominal diameter. The stand may vary from that shown in the photo.

1246 Boring Bar Set, 3/8" Shank, Carbide

Set of nine boring bars - 3 lengths for each min. bore size
Shank diameter 3/8"
Hardened and ground to +0” - .0005”
Shanks are made of special heat treated alloy steel
Designed so the same bar can bore flat

This carbide tipped 9-piece boring bar set includes three different length boring bars each for minimum bores of 5/16", 3/8", and 7/16". The bore depth ranges from 3/4" to 2-1/4". The heat treated, alloy steel shanks are held to 0.000 to -0.0005" from the nominal diameter. The holder may vary from that shown in the photo.

2683 Boring Bar Set, 3/8" Shank, HSS

Set of eight boring bars, depth ranges from 3/4" to 1 11/16"
Shank diameter 3/8"
One piece M35 5% Solid Cobalt
Hardened and ground to +0" - 0.0005"
Minimum bores of 5/16" and 3/8", and two bars at 7/16"

This high speed steel 8-piece boring bar set includes three different length boring bars each for minimum bores of 5/16" and 3/8", and two boring bars for minimum bores of 7/16". The bore depth ranges from 3/4" to 1-11/16". The boring bars are made from M35 5% cobalt high speed steel. The shanks are held to 0.000 to -0.0005" from the nominal diameter. The stand may vary from that shown in the photo.

1780 Boring Bar, 1/2" Indexable

Profiling bars for semi-finishing and finishing operations
Designed for CCMT 80° inserts
7° Relief angle
Negative 5° Lead angle for boring
3° Side & end cutting edge angle

This 1/2" diameter indexable boring bar uses CCMT inserts. Minimum bore diameter is 0.625" Use CCMT 32.51 or CCMT 32.52 inserts with this boring bar.

1721 Boring Bar, 1/2" Indexable, HSS Triangle Inserts, A R Warner Kit #14

1/2" diameter, 5" long HSS boring bar with TPMW-221 insert
2 extra TPMW-221 high speed steel inserts
1 extra Torx screw
1 wrench

This Arthur R. Warner Co. precision indexable 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 LittleMachineShop.com is proud to carry their products.

5608 Boring Bar, 1/2" Indexable, S08M-SCLCL-2, Tormach

Designation: S08M-SCLCL-2 (Left)
Steel shank 1/2" x 6" Left hand design
Designed for CCMT and CCGT inserts
Approach 95°, 7° relief angle
Insert Shape: 80° Rhombus (C)

Left hand Boring Bar. Includes wrenches and (1) insert.

5607 Boring Bar, 1/2" Indexable, S08M-SCLCR-2, Tormach

Designation: S08M-SCLCR-2
Steel shank 1/2" x 6"
Designed for CCMT and CCGT inserts
Approach 95°, 7° relief angle
Insert Shape: 80° Rhombus (C)

Right hand Boring Bar. Includes wrenches and (1) insert.

1779 Boring Bar, 3/8" Indexable

Profiling bars for semi-finishing and finishing operations
Designed for CCMT 80° inserts (one insert included)
7° Relief angle
Negative 5° Lead angle for boring
3° Side & end cutting edge angle

This 3/8" diameter indexable boring bar uses CCMT inserts. Minimum bore diameter is 0.50" Use CCMT 21.51 or CCMT 21.52 inserts with this boring bar set.

4788 Boring Bar, 3/8" Indexable, 80 Deg HSS Diamond Inserts, A R Warner Kit #13

3/8" diameter, 5" long boring bar
3 CEMW-21.5.5 high speed steel inserts
1 extra Torx screw
1 wrench

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 minimum boring diameter is 0.330". 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.

1720 Boring Bar, 3/8" Indexable, HSS Triangle Inserts, A R Warner Kit #12

3/8" diameter, 5" long boring bar with TPMW-1.81.5.5 insert
2 extra TPMW-1.81.5.5 high speed steel inserts
1 extra Torx screw
1 wrench

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 LittleMachineShop.com is proud to carry their products.

5606 Boring Bar, 3/8" Indexable, S06H-SCLCL-2, Tormach

Designation: S06H-SCLCL-2 (Left)
Steel shank 3/8" x 4" Left hand design
Designed for CCMT and CCGT inserts
Approach 95°, 7° relief angle
Insert Shape: 80° Rhombus (C)

Left hand Boring Bar. Includes wrenches and (1) insert.

5605 Boring Bar, 3/8" Indexable, S06H-SCLCR-2, Tormach

Designation: S06H-SCLCR-2
Steel shank 3/8" x 4"
Designed for CCMT and CCGT inserts
Approach 95°, 7° relief angle
Insert Shape: 80° Rhombus (C)

Right hand Boring Bar. Includes wrenches and (1) insert.

3719 Boring Bar, 5/16" Indexable

Profiling bars for semi-finishing and finishing operations
Designed for CCMT 80° inserts
7° Relief angle
Negative 5° Lead angle for boring
3° Side & end cutting edge angle

This 5/16" diameter indexable boring bar uses CCMT inserts. The boring bar is 4" long. The minimum boring diameter is 0.437". Use CCMT 21.51 or CCMT 21.52 inserts with this boring bar. This boring bar does not come with an insert. You must purchase inserts separately.

5436 Boring Bar, 5/16" Indexable, S05-SCLCR06, Reduced Neck

5/16" Shank diameter with .297" neck diameter
.350" minimum bore
4" overall length, .985" neck length
Use CCMT-21.5 inserts, 7 degree relief
T-8 Torx wrench, M2.5x6 Screw

Screw down style.

5435 Boring Bars, Indexable, 80 Deg Diamond Inserts, 3 Piece

3 piece set, 5/16", 3/8" and 1/2" diameter
Uses CCMT 80 degree diamond inserts
7 degree relief angle, negative 5 degree lead angle for boring
3 degree side and end cutting edge angle
Torx wrench and CCMT inserts included

Boring bars for semi-finishing and finishing operations. The 5/16" diameter bar is 4" long, designation S05H-SCLCR2. The 3/8" diameter bar is 6" long, designation S06M-SCLCR2. The 1/2" diameter bar is 7.75" long, designation S08R-SCLCR2.

2456 Boring Head Arbor, Tormach TTS

Quick change boring head shank with 7/8-20 thread
Minimal clearance height for tool change
Repeatable tool positioning
Hardened and precision ground

Part of the Tormach Tooling System (TTS) this boring head arbor fits to 7/8-20 UN F mounted hears or other tooling with the 7/8-20 thread.

5404 Boring Head Set, 2MT Professional Grade

Offset: 5/8", Crosshole: 1/2"
Drawbar thread: 3/8"-16 UNC
Min/Max boring diameter: 0.394" / 5.906"
Max boring depth: 1.970"

Rugged design allows excellent rigity for chatter-free boring. Head features a 7/8"-20 threaded back for shank exchangeability. The maximum offset is 5/8". Set complet with boring head, boring shank, carbide tipped boring bars & L-shape Hex Wrenches. Dial on head with 0.001" graduation for accurate hole sizing. Fitted durable carrying case included.

3830 Boring Head Set, 3MT

Includes boring head, 3MT shank, and 9-piece boring bar set
2" diameter boring head holds 1/2" shank boring bars
The boring head offsets up to 5/8", dial is graduated in 0.001"
Minimum bore diameter is 5/16"
Maximum bore depth is 3"

The carbide tipped 9-piece boring bar set includes three different length boring bars each for minimum bores of 5/16", 7/16", and 9/16". The bore depth ranges from 3/4" to 3". The heat treated, alloy steel shanks are held to 0.000 to -0.0005" from the nominal diameter. The drawbar thread is 3/8"-16. Note: If you have a Grizzly G8689 or Micro-Mark 82573 mini mills with the 3 Morse taper spindle, that has a metric threaded drawbar, you will need our 3/8"-16 threaded drawbar P/N 1637 to use this boring head.

3662 Boring Head Set, R8

Includes boring head, R8 shank, and 9-piece boring bar set
2" diameter boring head holds 1/2" shank boring bars
The boring head offsets up to 5/8", dial is graduated in 0.001"
Minimum bore diameter is 5/16"
Maximum bore depth is 3"

5403 Boring Head Set, R8 Professional Grade

Offset: 5/8", Cross hole: 1/2"
Shank thread: 7/16"-20 UNC
Min/Max boring diameter: 0.394" / 5.906"
Max boring depth: 1.970"

Rugged design allows excellent rigity for chatter-free boring. Head features a threaded back for multiple shanks exchangeable. Set complet with boring head, boring shank, carbide tipped boring bars & L-shape Hex Wrenches. Dial on head with 0.001" graduation for accurate hole sizing. Fitted durable carrying case included.

6114 Boring Head Set, R8, Indexable with 4 Boring Bars

Includes boring head, R8 shank, and 4-piece indexable boring bar set
The boring head offsets up to 5/8", dial is graduated in 0.001"
Minimum bore diameter is 7/16"; Maximum boring diameter is 5.906"
Maximum boring depth is 2.5"
The included indexable boring bars come with TCMT 21.5 C6 carbide inserts for steel and alloy

The indexable boring bar set includes 4 different length boring bars each with two requiring a 7/16" minimum bore and two requiring a 1/2" minimum bore. The bore depth ranges from 1-1/14" to 2.5". The heat treated, alloy steel shanks are held to 0.000 to -0.0005" from the nominal diameter. The included indexable boring bars come with TCMT 21.5 C6 carbide inserts for steel and alloy. 1 DIV = 0.001 which means when turning the dial by 1 division/graduation, the boring head's travel is 0.001" in radius movement and 0.002" in diameter movement. The set also comes with torx & l-shape hex wrenches and a fitted carrying case.

1630 Boring Head Shank, 2MT

2MT Shank
7/8" - 20 Mounting Thread
Tapped for 3/8" -16 Drawbar
Made of high grade tool steel
Hardened and ground

This boring head shank has a 2 Morse taper on one end and a 7/8 - 20 thread on the other. It is tapped for a 3/8"-16 drawbar. The Morse taper shank adapts our boring head to the mills with a 2 Morse taper spindle, and to the tailstock of the mini lathe.

1265 Boring Head Shank, 3MT

3MT Shank
7/8"-20 Mounting Thread
Tapped for 3/8" -16 Drawbar
Made of high grade tool steel
Hardened and ground

This boring head shank has a 3 Morse taper on one end and a 7/8 - 20 thread on the other. It is tapped for a 3/8"-16 drawbar. The boring head shank adapts our boring head to the mini mill with a 3 Morse taper spindle.

1626 Boring Head Shank, R8

R8 Boring Head Shank
7/8"-20 Mounting Thread
Tapped for 7/16"-20 Drawbar
Made of high grade tool steel
Hardened and ground

This boring head shank has an R8 taper on one end and a 7/8"-20 thread on the other. The mill boring head shank adapts our boring head to mills with an R8 spindle.

1266 Boring Head, 2"

2" boring head holds 1/2" shank boring bars
The mill boring head offsets up to 5/8"
Mounts on a shank with a 7/8"-20 thread
Dial is graduated in 0.001"
Bar holder moves freely and smoothly

Two inch round boring head designed with superior rigidity for chatter-free boring and precise hole size accuracy. Ground and hardened adjusting screw is designed for long lasting, trouble free use.

1968 Tool Bit, 1/4" Boring Bar, Presharpened

1/4" Presharpened Tool Bit
High Speed Steel
Used for Boring

The Metal Lathe Tooling High Speed Steel Presharpened Cutting Tool is a durable and reliable choice for boring tasks on your metal lathe. Made from high speed steel, this cutting tool is capable of withstanding high temperatures and stress during use, ensuring a long lifespan. The 1/4" size and boring shape of the tool make it suitable for a wide range of boring applications, and the presharpened edge allows for quick and easy setup without the need for additional sharpening. This makes it an ideal choice for busy machine shops and prototyping facilities where time is of the essence. Whether you're working with aluminum, steel, or other metals, this cutting tool is up to the task. Its sharp edge and fine tip allow for precise and accurate cuts, resulting in a clean and professional finish. Overall, the Metal Lathe Tooling High Speed Steel Presharpened Cutting Tool is a versatile and essential tool for any metal lathe operator looking to achieve high-quality results.

3694 Turning & Boring Tools, 3/8" Indexable, HSS Inserts, A R Warner Kit #8

Right and left hand turning tools with 0.375" shank 3.5" long
Boring bar with 0.375" shank 5.0" overall length
Includes three T-15 HSS (CCMW21.51) inserts for turning
Includes two T-15 HSS (CEMW21.51) inserts for boring
Includes two MS-1152S screws, three MS-1153 screws and one T-7 wrench

This Arthur R. Warner Co. kit includes a 3/8" right-hand turning tool, a 3/8" left-hand turning tool, and a 3/8" boring bar. The right hand turning bar has a 0.375" shank, and is 3.50" in overall length.The left hand turning bar has a 0.375" shank, and is 3.50" in overall length. The left hand turning bar has a second insert pocket in opposite end that provides a 50° side cutting edge angle. This provides a way to use the two insert points that are not used in the other tool holders. The boring bar has a 0.375" shank, and is 5.0" in overall length. It has 0.188" flat along length for location, and requires a 0.365" minimum bore. 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.

5433 Turning & Boring Tools, 3/8" Indexable, Triangle Inserts

4 turning tools
1 - 6" boring tool
Inserts and torx wrenches
3/8" shank
Uses TCMT-21.51 inserts

Set comes in a fitted aluminum case.

5432 Turning & Boring Tools, 5/16" Indexable, Triangle Inserts

4 turning tools
1 boring tool
Inserts and torx wrenches
5/16" shank
Uses TCMT-1.81.51 Inserts

Set comes in a fitted aluminum case.

1435 Turning & Boring Tools, 8 mm Indexable, Diamond Inserts

7 piece indexable turning and boring set
8 mm tool shank
CCMT21.51 inserts included
Six turning tools, one boring bar
Carrying case and T8 wrench included

Turning and boring set with seven pieces. Each tool has an 8 mm tool shank and uses a CCMT21.51 ANSI (CCMT060204 ISO) indexable insert. Additional inserts are available with our part number 1781. CCMT diamond inserts have four cutting edges. The turning tools have square shanks while the boring bar has a hexagon shank. (See specifications tab for dimensions.) See contents tab for what is included in this set. Set comes in a carrying case and a T8 wrench.

3693 Turning 1/4" & Boring 3/8" Indexable Tools, HSS Inserts, A R Warner Kit #4

Right and left hand turning tools with 0.250" shank 3.5" long
Boring bar with 0.375" shank 5.0" overall length
Includes three T-15 HSS (CCMW21.51) inserts for turning
Includes two T-15 HSS (CEMW21.51) inserts for boring
Includes two MS-1152S screws, four MS-1153 screws and one T-7 wrench

This Arthur R. Warner Co. kit includes a 1/4" right-hand turning tool, a 1/4" left-hand turning tool, and a 3/8" boring bar.The right hand turning bar has a 0.250" shank, and is 3.50" in overall length.The left hand turning bar has a 0.250" shank, and is 3.50" in overall length. The left hand turning bar has a second insert pocket in opposite end that provides a 50° side cutting edge angle. This provides a way to use the two insert points that are not used in the other tool holders.The boring bar has a 0.375"” shank, and is 5.0" in overall length. It has 0.188" flat along length for location, and requires a 0.365" minimum bore.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.