Cut Type Cut Type | Show |
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![]() | Internal Threading |
Cut Type Cut Type | Hide |
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Cut Direction Cut Direction |
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Right Hand | Left Hand |
Thread Direction Thread Direction |
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Material Material |
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System of Measurement System of Measurement |
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Minimum Hole Diameter Minimum Hole Diameter |
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Material Grade Material Grade |
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Insert Shape Insert Shape |
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![]() | Triangle |
Made of solid carbide, these tools provide more rigidity than carbide-tipped tools. Use them to create internal Acme threads or V-shaped UNC, UNS, and UNF threads. All have flats on the shank for quick alignment.
Threads Per Inch | Min. Hole Dia. | Max. Hole Dp. | Offset | Shank Dia. | Overall Lg. | Material | Nose Angle | For Use On | Each | |
Right Hand | ||||||||||
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24-56 | 0.12" | 0.3" | 0.03" | 3/16" | 2 1/2" | Micrograin Carbide | 60° | Aluminum, Brass, Bronze, Cast Iron, Nickel, Stainless Steel, Steel | 0000000 | 000000 |
20-56 | 0.14" | 0.3" | 0.035" | 3/16" | 2 1/2" | Micrograin Carbide | 60° | Aluminum, Brass, Bronze, Cast Iron, Nickel, Stainless Steel, Steel | 0000000 | 00000 |
18-56 | 0.18" | 1/2" | 0.04" | 1/4" | 2 1/2" | Micrograin Carbide | 60° | Aluminum, Brass, Bronze, Cast Iron, Nickel, Stainless Steel, Steel | 0000000 | 00000 |
18-56 | 0.18" | 3/4" | 0.04" | 1/4" | 2 1/2" | Micrograin Carbide | 60° | Aluminum, Brass, Bronze, Cast Iron, Nickel, Stainless Steel, Steel | 0000000 | 00000 |
16-40 | 0.2" | 0.6" | 0.045" | 1/4" | 2 1/2" | Micrograin Carbide | 60° | Aluminum, Brass, Bronze, Cast Iron, Nickel, Stainless Steel, Steel | 0000000 | 00000 |
14-40 | 0.23" | 3/4" | 0.055" | 5/16" | 2 1/2" | Micrograin Carbide | 60° | Aluminum, Brass, Bronze, Cast Iron, Nickel, Stainless Steel, Steel | 0000000 | 00000 |
14-40 | 0.23" | 1" | 0.055" | 5/16" | 2 1/2" | Micrograin Carbide | 60° | Aluminum, Brass, Bronze, Cast Iron, Nickel, Stainless Steel, Steel | 0000000 | 00000 |
12-40 | 0.29" | 1" | 0.07" | 5/16" | 2 1/2" | Micrograin Carbide | 60° | Aluminum, Brass, Bronze, Cast Iron, Nickel, Stainless Steel, Steel | 0000000 | 00000 |
10-32 | 0.32" | 3/4" | 0.075" | 3/8" | 2 1/2" | Micrograin Carbide | 60° | Aluminum, Brass, Bronze, Cast Iron, Nickel, Stainless Steel, Steel | 0000000 | 00000 |
10-32 | 0.36" | 3/4" | 0.085" | 3/8" | 2 1/2" | Micrograin Carbide | 60° | Aluminum, Brass, Bronze, Cast Iron, Nickel, Stainless Steel, Steel | 0000000 | 00000 |
10-32 | 0.36" | 1" | 0.085" | 3/8" | 2 1/2" | Micrograin Carbide | 60° | Aluminum, Brass, Bronze, Cast Iron, Nickel, Stainless Steel, Steel | 0000000 | 00000 |
8-24 | 0.49" | 3/4" | 0.12" | 1/2" | 3" | Micrograin Carbide | 60° | Aluminum, Brass, Bronze, Cast Iron, Nickel, Stainless Steel, Steel | 0000000 | 00000 |
Threads Per Inch | Min. Hole Dia. | Max. Hole Dp. | Offset | Shank Dia. | Overall Lg. | Material | Nose Angle | For Use On | Each | |
Right Hand | ||||||||||
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6 | 0.49" | 2" | 0.12" | 1/2" | 3" | Micrograin Carbide | 29° | Aluminum, Brass, Bronze, Cast Iron, Nickel, Stainless Steel, Steel | 0000000 | 000000 |
5 | 0.49" | 2" | 0.12" | 1/2" | 3" | Micrograin Carbide | 29° | Aluminum, Brass, Bronze, Cast Iron, Nickel, Stainless Steel, Steel | 0000000 | 00000 |
4 | 0.49" | 2" | 0.15" | 1/2" | 3" | Micrograin Carbide | 29° | Aluminum, Brass, Bronze, Cast Iron, Nickel, Stainless Steel, Steel | 0000000 | 00000 |
A carbide tip brazed onto a ground steel shank makes these tools less brittle than solid carbide tools. They are designed to cut V-shaped UNC, UNS, or UNF threads on the inside of a workpiece.
Shank | Tip | |||||||||||
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Min. Hole Dia. | Max. Hole Dp. | Offset | Wd. | Ht. | Overall Lg. | Material | Nose Angle | Lg. | Thick. | For Use On | Each | |
Right Hand | ||||||||||||
0.45" | 1/2" | 0.175" | 3/8" | 3/8" | 2 1/2" | Micrograin Carbide | 60° | 5/16" | 3/32" | Aluminum, Brass, Bronze, Cast Iron, Nickel, Stainless Steel, Steel | 0000000 | 000000 |
0.45" | 1" | 0.175" | 3/8" | 3/8" | 2 1/2" | Micrograin Carbide | 60° | 5/16" | 3/32" | Aluminum, Brass, Bronze, Cast Iron, Nickel, Stainless Steel, Steel | 0000000 | 00000 |
0.575" | 3/4" | 0.2" | 1/2" | 1/2" | 3 1/2" | Micrograin Carbide | 60° | 1/2" | 3/32" | Aluminum, Brass, Bronze, Cast Iron, Nickel, Stainless Steel, Steel | 0000000 | 00000 |
0.575" | 1 1/4" | 0.2" | 1/2" | 1/2" | 3 1/2" | Micrograin Carbide | 60° | 1/2" | 3/32" | Aluminum, Brass, Bronze, Cast Iron, Nickel, Stainless Steel, Steel | 0000000 | 00000 |
Reduce tooling setup time—install the holder once and alternate between applications by switching out the bit. Once the holder has been aligned with the centerline of the lathe, the locking system ensures alignment repeatability from tool to tool.
Internal threading tools cut V-shaped UNC, UNS, or UNF threads on the inside of a workpiece.
Min. Hole Dia. | Max. Hole Dp. | Offset | Material | For Use On | Each | |
3/16" Shank Dia. | ||||||
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0.035" | 0.15" | 0.015" | Micrograin Carbide | Aluminum, Brass, Bronze, Cast Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium | 000000 | 000000 |
0.04" | 0.15" | 0.015" | Micrograin Carbide | Aluminum, Brass, Bronze, Cast Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium | 000000 | 00000 |
0.05" | 0.2" | 0.02" | Micrograin Carbide | Aluminum, Brass, Bronze, Cast Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium | 000000 | 00000 |
0.06" | 0.3" | 0.02" | Micrograin Carbide | Aluminum, Brass, Bronze, Cast Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium | 000000 | 00000 |
0.08" | 1/2" | 0.02" | Micrograin Carbide | Aluminum, Brass, Bronze, Cast Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium | 000000 | 00000 |
0.1" | 0.6" | 0.025" | Micrograin Carbide | Aluminum, Brass, Bronze, Cast Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium | 000000 | 00000 |
0.11" | 3/4" | 0.03" | Micrograin Carbide | Aluminum, Brass, Bronze, Cast Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium | 000000 | 00000 |
0.12" | 3/4" | 0.03" | Micrograin Carbide | Aluminum, Brass, Bronze, Cast Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium | 000000 | 00000 |
0.14" | 3/4" | 0.035" | Micrograin Carbide | Aluminum, Brass, Bronze, Cast Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium | 000000 | 00000 |
0.16" | 1" | 0.04" | Micrograin Carbide | Aluminum, Brass, Bronze, Cast Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium | 0000000 | 00000 |
1/4" Shank Dia. | ||||||
0.18" | 1" | 0.04" | Micrograin Carbide | Aluminum, Brass, Bronze, Cast Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium | 0000000 | 00000 |
0.2" | 1" | 0.045" | Micrograin Carbide | Aluminum, Brass, Bronze, Cast Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium | 0000000 | 00000 |
5/16" Shank Dia. | ||||||
0.23" | 0.4" | 0.055" | Micrograin Carbide | Aluminum, Brass, Bronze, Cast Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium | 0000000 | 00000 |
0.23" | 1 1/2" | 0.055" | Micrograin Carbide | Aluminum, Brass, Bronze, Cast Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium | 0000000 | 00000 |
0.29" | 1 3/4" | 0.07" | Micrograin Carbide | Aluminum, Brass, Bronze, Cast Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium | 0000000 | 00000 |
3/8" Shank Dia. | ||||||
0.32" | 1.8" | 0.075" | Micrograin Carbide | Aluminum, Brass, Bronze, Cast Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium | 0000000 | 00000 |
0.36" | 1.8" | 0.085" | Micrograin Carbide | Aluminum, Brass, Bronze, Cast Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium | 0000000 | 00000 |
1/2" Shank Dia. | ||||||
0.46" | 2" | 0.12" | Micrograin Carbide | Aluminum, Brass, Bronze, Cast Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium | 0000000 | 000000 |
0.49" | 2" | 0.12" | Micrograin Carbide | Aluminum, Brass, Bronze, Cast Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium | 0000000 | 000000 |
Install these inserts into a matching holder to cut external or internal threads on a workpiece. They are compatible with top-notch style threading and grooving systems, which use a highly-rigid clamping design, resulting in a smoother finish and superior tool life. When the first point dulls, flip the insert to use the second point.
Pair a right-hand insert with a right-hand external holder or a left-hand internal holder.
Pair a left-hand insert with a left-hand external holder or a right-hand internal holder.
Thread | Threads Per Inch | ||||||||||||
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Insert Code | For External Holder Code | For Internal Holder Code | Type | Shape | Angle | External | Internal | Thick. | Tip Radius | O'all Ht. | For Use On | Each | |
AC3 Carbide | |||||||||||||
Right Hand | |||||||||||||
T-3R | ASR-103B SR-123B SR-163D | A16-EL3 A24-EL3 | UNC UNS UNF | V | 60° | 6 to 20 | 5 to 12 | 0.195" | 0.008" | 0.344" | Brass, Bronze, Cast Iron, Stainless Steel | 0000000 | 000000 |
Left Hand | |||||||||||||
T-3L | ASL-103B SL-123B SL-163D | A16-ER3 A24-ER3 | UNC UNS UNF | V | 60° | 6 to 20 | 5 to 12 | 0.195" | 0.008" | 0.344" | Brass, Bronze, Cast Iron, Stainless Steel | 0000000 | 00000 |
AC50 Carbide | |||||||||||||
Right Hand | |||||||||||||
T-3R | ASR-103B SR-123B SR-163D | A16-EL3 A24-EL3 | UNC UNS UNF | V | 60° | 6 to 20 | 5 to 12 | 0.195" | 0.008" | 0.344" | Steel | 0000000 | 00000 |
Left Hand | |||||||||||||
T-3L | ASL-103B SL-123B SL-163D | A16-ER3 A24-ER3 | UNC UNS UNF | V | 60° | 6 to 20 | 5 to 12 | 0.195" | 0.008" | 0.344" | Steel | 0000000 | 00000 |
Pair these holders with a threading insert or a grooving insert to make cuts on the inside of a hollow workpiece. A highly-rigid clamping design results in a smoother finish and superior tool life. They are compatible with top-notch style threading and grooving systems.
Use a right-hand internal holder with a left-hand insert when the workpiece is rotating counterclockwise (toward the lathe operator).
Use a left-hand internal holder with a right-hand insert when the workpiece is rotating clockwise (away from the lathe operator).
Holders | ||||||||||||
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For Insert | Replacement Clamps | |||||||||||
Holder Code | Shank Dia. | Min. Hole Dia. | Max. Hole Dp. | O'all Lg. | Material | Code | Thick. | Clamp Screw Hex Key Size | Each | Each | ||
Right Hand | ||||||||||||
A16-ER3 | 1" | 1 3/8" | 4" | 12" | Steel | G-3031L, G-3062L, G-3094L, G-3125L, T-3L | 0.195" | 5/32" | 0000000 | 0000000 | 0000000 | 00000 |
A24-ER3 | 1 1/2" | 2" | 6" | 14" | Steel | G-3031L, G-3062L, G-3094L, G-3125L, T-3L | 0.195" | 5/32" | 0000000 | 000000 | 0000000 | 0000 |
Left Hand | ||||||||||||
A16-EL3 | 1" | 1 3/8" | 4" | 12" | Steel | G-3031R, G-3062R, G-3094R, G-3125R, T-3R | 0.195" | 5/32" | 0000000 | 000000 | 0000000 | 0000 |
A24-EL3 | 1 1/2" | 2" | 6" | 14" | Steel | G-3031R, G-3062R, G-3094R, G-3125R, T-3R | 0.195" | 5/32" | 0000000 | 000000 | 0000000 | 0000 |
Replacement Clamp Screw | 0000000 | Each | 00000 |
Insert Code | Thread Type | Internal Threads Per Inch | Thick. | Tip Radius | O'all Ht. | For Use On | Each | |
AC3 Carbide | ||||||||
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Right Hand | ||||||||
T-3R | UNC, UNS, UNF | 5 to 12 | 0.195" | 0.008" | 0.344" | Brass, Bronze, Cast Iron, Stainless Steel | 0000000 | 000000 |
Left Hand | ||||||||
T-3L | UNC, UNS, UNF | 5 to 12 | 0.195" | 0.008" | 0.344" | Brass, Bronze, Cast Iron, Stainless Steel | 0000000 | 00000 |
AC50 Carbide | ||||||||
Right Hand | ||||||||
T-3R | UNC, UNS, UNF | 5 to 12 | 0.195" | 0.008" | 0.344" | Steel | 0000000 | 00000 |
Left Hand | ||||||||
T-3L | UNC, UNS, UNF | 5 to 12 | 0.195" | 0.008" | 0.344" | Steel | 0000000 | 00000 |
Groove | ||||||||
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Insert Code | Wd. | Dp. | Thick. | Tip Radius | O'all Ht. | For Use On | Each | |
AC3 Carbide | ||||||||
Right Hand | ||||||||
G-3031R | 0.031" | 0.05" | 0.195" | 0.005" | 0.344" | Brass, Bronze, Cast Iron, Stainless Steel | 000000 | 000000 |
G-3062R | 0.062" | 0.12" | 0.195" | 0.010" | 0.344" | Brass, Bronze, Cast Iron, Stainless Steel | 000000 | 00000 |
G-3094R | 0.094" | 0.18" | 0.195" | 0.010" | 0.344" | Brass, Bronze, Cast Iron, Stainless Steel | 0000000 | 00000 |
G-3125R | 1/8" | 0.18" | 0.195" | 0.010" | 0.344" | Brass, Bronze, Cast Iron, Stainless Steel | 0000000 | 00000 |
Left Hand | ||||||||
G-3031L | 0.031" | 0.05" | 0.195" | 0.005" | 0.344" | Brass, Bronze, Cast Iron, Stainless Steel | 000000 | 00000 |
G-3062L | 0.062" | 0.12" | 0.195" | 0.010" | 0.344" | Brass, Bronze, Cast Iron, Stainless Steel | 000000 | 00000 |
G-3094L | 0.094" | 0.18" | 0.195" | 0.010" | 0.344" | Brass, Bronze, Cast Iron, Stainless Steel | 0000000 | 00000 |
G-3125L | 1/8" | 0.18" | 0.195" | 0.010" | 0.344" | Brass, Bronze, Cast Iron, Stainless Steel | 0000000 | 00000 |
AC50 Carbide | ||||||||
Right Hand | ||||||||
G-3031R | 0.031" | 0.05" | 0.195" | 0.005" | 0.344" | Steel | 000000 | 00000 |
G-3062R | 0.062" | 0.12" | 0.195" | 0.010" | 0.344" | Steel | 000000 | 00000 |
G-3094R | 0.094" | 0.18" | 0.195" | 0.010" | 0.344" | Steel | 000000 | 00000 |
G-3125R | 1/8" | 0.18" | 0.195" | 0.010" | 0.344" | Steel | 0000000 | 00000 |
Left Hand | ||||||||
G-3031L | 0.031" | 0.05" | 0.195" | 0.005" | 0.344" | Steel | 000000 | 00000 |
G-3062L | 0.062" | 0.12" | 0.195" | 0.010" | 0.344" | Steel | 000000 | 00000 |
G-3094L | 0.094" | 0.18" | 0.195" | 0.010" | 0.344" | Steel | 0000000 | 00000 |
G-3125L | 1/8" | 0.18" | 0.195" | 0.010" | 0.344" | Steel | 0000000 | 00000 |
These tools come with one high-speed steel insert for use on steel and stainless steel and one high-speed steel insert for use on softer materials, such as aluminum and brass. When one point of an insert dulls, rotate it to use a sharp point. When all points dull, replace the insert rather than the whole tool.
Tool with 1/2" shank can cut external right-hand threads with one end and internal right-hand threads with the other.
Thread | Threads Per Inch | Insert | |||||||||||||
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Min. Hole Dia. | Max. Hole Dp. | O'all Lg. | Type | Shape | Angle | External | Internal | Material | For Use On | Code | Inscribed Circle Dia. (IC) | Thick. | Tip Radius | Each | |
Right Hand | |||||||||||||||
1/2" Square Shank—For External Threading and Internal Threading | |||||||||||||||
1 3/8" | 1 1/4" | 5" | UNC, UNS, UNF | V | 60° | 8 to 36 | 8 to 36 | Steel | Aluminum, Brass, Bronze, Plastic, Stainless Steel, Steel | TNMC-32NV TPMC-32NV | 3/8" | 1/8" | 0.004" | 0000000 | 0000000 |
Thread | ||||||||||
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Insert Code | Type | Shape | Angle | Threads Per Inch Range | Inscribed Circle Dia. (IC) | Thick. | Tip Radius | Finish | Each | |
For Use On Aluminum, Brass, Bronze, Plastic | ||||||||||
TPMC-32NV | UNC, UNS, UNF | V | 60° | 8 to 36 | 3/8" | 1/8" | 0.004" | Uncoated | 0000000 | 000000 |
For Use On Stainless Steel, Steel | ||||||||||
TNMC-32NV | UNC, UNS, UNF | V | 60° | 8 to 36 | 3/8" | 1/8" | 0.004" | Uncoated | 0000000 | 00000 |