Welcome
Please confirm your preferences
Update Preferences
Product Suggestions
Product Family suggestions
Hi, Sign In
Your Selected Account:
There is an issue with your account. Please contact customer support.
Sold To Account Change Account
Ship To Account Change Account
- Manage Orders
- Manage Channels
Notifications
Mark all as read- Change Password
- My Profile
- Sign Out
Turn up your volume for less with our limited-time offers! Shop Now
- Products
- /
- Metalworking Tools
- /
- Threading
- /
- Thread Turning
- /
- Top Notch™ Threading
- /
- Boring Heads
Boring Heads
Top Notch™ threading boring heads are specifically designed to excel in creating larger holes that already exist. They are available in several diameters, providing a range of threading options. These boring heads are designed to deliver outstanding performance.
Select Filters
Filters
Filters
View filters in
Metric
Inch
Key Filters
Workpiece Material
Workpiece Material
- P Steel (7)
- P0Low-Carbon Steels, Long Chipping C < .25%; <125 HB; <530 N/mm^2 UTS(7)
- P1Low-Carbon Steels, Short Chipping C < .25%; <125 HB; <530 N/mm^2 UTS(7)
- P2Medium and High Carbon Steels C < .25%; <220 HB; <25 HRC; >530 N/mm^2 UTS(7)
- P3Alloy Steels & Tool Steels C > .25%; <330 HB; <35 HRC; 600-850 N/mm^2 UTS(7)
- P4Alloy Steels & Tool Steels C > .25%; 350-420 HB; 35-43 HRC; 850-1400 N/mm^2 UTS(7)
- P5Ferritic, Martensitic, and PH Stainless Steels <330 HB; <35 HRC; 600-900 N/mm^2 UTS(7)
- P6High Strength Ferritic, Martensitic, and PH Stainless Steels 350-450 HB; 35-43 HRC; 900-2400 N/mm^2 UTS(7)
- M Stainless Steel (7)
- M1Austenitic Stainless Steel 130-200 HB; <600 N/mm^2 UTS(7)
- M2High Strength Austenitic Stainless and Cast Stainless Steels 150-230 HB; <25 HRC; >600 N/mm^2 UTS(7)
- M3Duplex Stainless Steel 135-275 HB; <30 HRC; 500-1200 N/mm^2 UTS(7)
- K Cast Iron (7)
- K1Gray Cast Iron 120-290 HB; <32 HRC; 125-500 N/mm^2 UTS(7)
- K2Low and Medium Strength CGI and Ductile Irons 130-260 HB; <28 HRC; <600 N/mm^2 UTS(7)
- K3High Strength Ductile and Austempered Ductile Iron 180-350 HB; <43 HRC; >600 N/mm^2 UTS(7)
- N Non-Ferrous Materials (7)
- N1Wrought Aluminum (7)
- N2Low-Silicon Aluminum Alloys and Magnesium Alloys Si <12.2%(7)
- N3High-Silicon Aluminum Alloys Si >12.2%(2)
- N4Copper, Brass, Zinc-based on machinability index range of 70-100 (7)
- N5Nylon, Plastics, Rubbers, Phenolics, Resins, Fiberglass (7)
- N6Carbon, Graphite Composites, CFRP (7)
- S High-Temp Alloys (7)
- S1Iron-Based, Heat-Resistant Alloys 160-260 HB; 25-48 HRC; 500-1200 N/mm^2 UTS(7)
- S2Cobalt-Based, Heat-Resistant Alloys 250-450 HB; 25-48 HRC; 1000-1450 N/mm^2 UTS(7)
- S3Nickel-Based, Heat Resistant Alloys 160-450 HB; <48 HRC; 600-1700 N/mm^2 UTS(7)
- S4Titanium and Titanium Alloys 300-400 HB; 33-43 HRC; 900-1600 N/mm^2 UTS(7)
- H Hardened Materials (7)
- H1Hardened Materials 44-48 HRC(7)
- H2Hardened Materials 48-55 HRC(7)
- H3Hardened Materials 56-60 HRC(6)
- H4Hardened Materials >60 HRC(6)
Applications
Applications
Face Grooving (7)
ID Grooving (7)
ID Thread Turning (7)
Type of Thread
Type of Thread
- 60 (6)
- ACME (7)
- API (6)
- API RD (2)
- BSW (2)
- BUTTRESS (6)
- M (1)
- NPT (2)
- STUB ACME (2)
- UN (6)
- UNJ (2)
Cutting Condition
Cutting Condition
- Heavily Interrupted Cut (6)
- Lightly Interrupted Cut (6)
- Smooth Cut (6)
- Varying Depth of Cut (6)
=
Cutting Edges Per Insert
Cutting Edges Per Insert
- 1.0 (6)
- 2.0 (7)
Cutting Edges Per Insert MinEnter ValuetoCutting Edges Per Insert MaxCutting Edges Per Insert
Corner configuration
≈
Corner Radius
Corner Radius
- 0.002 in(1)
- 0.003 in(6)
- 0.004 in(2)
- 0.005 in(2)
- 0.006 in(6)
- 0.007 in(6)
- 0.008 in(6)
- 0.01 in(6)
- 0.011 in(1)
- 0.012 in(2)
- 0.014 in(6)
- 0.016 in(2)
- 0.019 in(6)
- 0.02 in(2)
- 0.023 in(6)
- 0.031 in(2)
- 0.035 in(6)
- 0.039 in(2)
- 0.047 in(2)
- 0.06 in(2)
- 0.062 in(2)
- 0.063 in(6)
- 0.078 in(2)
- 0.079 in(3)
- 0.089 in(1)
- 0.095 in(6)
- 0.098 in(3)
- 0.125 in(4)
Corner Radius MinEnter ValuetoCorner Radius MaxCorner Radius
≈
Corner Radius
Corner Radius
- 0.05 mm(1)
- 0.076 mm(6)
- 0.1 mm(2)
- 0.125 mm(2)
- 0.151 mm(6)
- 0.176 mm(6)
- 0.2 mm(6)
- 0.225 mm(2)
- 0.25 mm(6)
- 0.275 mm(1)
- 0.301 mm(2)
- 0.325 mm(6)
- 0.351 mm(6)
- 0.4 mm(2)
- 0.45 mm(6)
- 0.476 mm(1)
- 0.5 mm(2)
- 0.576 mm(6)
- 0.775 mm(2)
- 0.9 mm(6)
- 1.0 mm(2)
- 1.201 mm(2)
- 1.5 mm(2)
- 1.576 mm(2)
- 1.6 mm(6)
- 1.975 mm(2)
- 2.0 mm(3)
- 2.25 mm(1)
- 2.401 mm(6)
- 2.5 mm(3)
- 3.176 mm(4)
Corner Radius MinEnter ValuetoCorner Radius MaxCorner Radius
Application
Minimum Depth of Cut
Minimum Depth of Cut
Minimum Feed
Minimum Feed
Grade Of Cutting Tool
Grade Of Cutting Tool
- K313 (6)
- K420 (6)
- K68 (7)
- KB1345 (1)
- KB1630 (6)
- KBH20 (1)
- KC5010 (7)
- KC5025 (7)
- KC5410 (2)
- KC710 (1)
- KC720 (6)
- KC722 (1)
- KC730 (6)
- KC810 (1)
- KC850 (6)
- KC9110 (3)
- KC9320 (1)
- KC935 (1)
- KC950 (1)
- KCK20 (6)
- KCK20B (6)
- KCP10B (6)
- KCP25B (6)
- KCP25C (1)
- KCU10 (6)
- KCU10B (7)
- KCU25 (7)
- KCU25B (6)
- KD100 (1)
- KD120 (1)
- KD1425 (2)
- KT315 (5)
- KU10T (1)
- KU25T (1)
- KU30T (1)
- KY3000 (1)
Hand Of Tool
Hand Of Tool
- L (2)
- R (5)
=
F Dimension
F Dimension
- 34.926 mm(1)
- 38.1 mm(3)
- 41.276 mm(3)
F Dimension MinEnter ValuetoF Dimension MaxF Dimension
=
F Dimension
F Dimension
- 1.375 in(1)
- 1.5 in(3)
- 1.625 in(3)
F Dimension MinEnter ValuetoF Dimension MaxF Dimension
=
Minimum Axial Groove Diameter
Minimum Axial Groove Diameter
- 69.851 mm(1)
- 76.2 mm(3)
- 82.551 mm(3)
Minimum Axial Groove Diameter MinEnter ValuetoMinimum Axial Groove Diameter MaxMinimum Axial Groove Diameter
=
Minimum Axial Groove Diameter
Minimum Axial Groove Diameter
- 2.75 in(1)
- 3.0 in(3)
- 3.25 in(3)
Minimum Axial Groove Diameter MinEnter ValuetoMinimum Axial Groove Diameter MaxMinimum Axial Groove Diameter
=
Maximum Axial Groove Diameter
Maximum Axial Groove Diameter
- 393.661 in(6)
Maximum Axial Groove Diameter MinEnter ValuetoMaximum Axial Groove Diameter MaxMaximum Axial Groove Diameter
=
Maximum Axial Groove Diameter
Maximum Axial Groove Diameter
- 9999.0 mm(6)
Maximum Axial Groove Diameter MinEnter ValuetoMaximum Axial Groove Diameter MaxMaximum Axial Groove Diameter
=
Maximum Bore Depth
Maximum Bore Depth
- 8.0 in(1)
- 9.0 in(1)
- 10.0 in(5)
Maximum Bore Depth MinEnter ValuetoMaximum Bore Depth MaxMaximum Bore Depth
=
Maximum Bore Depth
Maximum Bore Depth
- 203.201 mm(1)
- 228.601 mm(1)
- 254.0 mm(5)
Maximum Bore Depth MinEnter ValuetoMaximum Bore Depth MaxMaximum Bore Depth
Front-End
=
Cutting Width
Cutting Width
- 0.039 in(2)
- 0.047 in(2)
- 0.06 in(2)
- 0.062 in(2)
- 0.069 in(2)
- 0.073 in(2)
- 0.078 in(2)
- 0.079 in(2)
- 0.088 in(2)
- 0.089 in(1)
- 0.094 in(1)
- 0.095 in(2)
- 0.097 in(2)
- 0.098 in(2)
- 0.105 in(2)
- 0.108 in(2)
- 0.11 in(2)
- 0.119 in(6)
- 0.122 in(2)
- 0.125 in(6)
- 0.126 in(3)
- 0.128 in(2)
- 0.131 in(1)
- 0.138 in(6)
- 0.143 in(2)
- 0.156 in(2)
- 0.157 in(6)
- 0.167 in(6)
- 0.177 in(6)
- 0.178 in(2)
- 0.185 in(2)
- 0.188 in(6)
- 0.189 in(6)
- 0.192 in(1)
- 0.193 in(1)
- 0.195 in(2)
- 0.196 in(2)
- 0.197 in(4)
- 0.202 in(1)
- 0.213 in(4)
- 0.217 in(4)
- 0.219 in(1)
- 0.237 in(4)
- 0.25 in(4)
- 0.256 in(4)
- 0.384 in(1)
Cutting Width MinEnter ValuetoCutting Width MaxCutting Width
=
Cutting Width
Cutting Width
- 1.0 mm(2)
- 1.201 mm(2)
- 1.5 mm(2)
- 1.576 mm(2)
- 1.75 mm(2)
- 1.826 mm(2)
- 1.975 mm(2)
- 2.0 mm(2)
- 2.2 mm(2)
- 2.225 mm(2)
- 2.25 mm(1)
- 2.375 mm(1)
- 2.401 mm(2)
- 2.475 mm(2)
- 2.5 mm(2)
- 2.676 mm(2)
- 2.75 mm(2)
- 2.801 mm(2)
- 3.0 mm(6)
- 3.1 mm(2)
- 3.176 mm(6)
- 3.2 mm(3)
- 3.25 mm(2)
- 3.325 mm(1)
- 3.5 mm(6)
- 3.6 mm(2)
- 3.95 mm(2)
- 3.975 mm(1)
- 4.0 mm(6)
- 4.25 mm(6)
- 4.5 mm(6)
- 4.525 mm(2)
- 4.7 mm(2)
- 4.775 mm(6)
- 4.801 mm(6)
- 4.875 mm(1)
- 4.9 mm(1)
- 4.95 mm(2)
- 4.976 mm(2)
- 5.0 mm(4)
- 5.125 mm(1)
- 5.4 mm(4)
- 5.5 mm(4)
- 5.575 mm(1)
- 6.0 mm(4)
- 6.351 mm(4)
- 6.5 mm(4)
- 9.75 mm(1)
Cutting Width MinEnter ValuetoCutting Width MaxCutting Width
Insert Geometry
Cutting Tool Material
Cutting Tool Material
- B H (6)
- B L (1)
- C N (1)
- D P (3)
- H T (5)
- H W (7)
Back-End
=
Back-End Diameter
Back-End Diameter
- 50.801 mm(1)
- 57.151 mm(1)
- 63.5 mm(5)
Back-End Diameter MinEnter ValuetoBack-End Diameter MaxBack-End Diameter
=
Back-End Diameter
Back-End Diameter
- 2.0 in(1)
- 2.25 in(1)
- 2.5 in(5)
Back-End Diameter MinEnter ValuetoBack-End Diameter MaxBack-End Diameter
No filters matching ""
