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.
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Workpiece Material
- Steel (7)
- Low-Carbon Steels, Long Chipping C < .25%; <125 HB; <530 N/mm^2 UTS(7)
- Low-Carbon Steels, Short Chipping C < .25%; <125 HB; <530 N/mm^2 UTS(7)
- Medium and High Carbon Steels C < .25%; <220 HB; <25 HRC; >530 N/mm^2 UTS(7)
- Alloy Steels & Tool Steels C > .25%; <330 HB; <35 HRC; 600-850 N/mm^2 UTS(7)
- Alloy Steels & Tool Steels C > .25%; 350-420 HB; 35-43 HRC; 850-1400 N/mm^2 UTS(7)
- Ferritic, Martensitic, and PH Stainless Steels <330 HB; <35 HRC; 600-900 N/mm^2 UTS(7)
- High Strength Ferritic, Martensitic, and PH Stainless Steels 350-450 HB; 35-43 HRC; 900-2400 N/mm^2 UTS(7)
- Stainless Steel (7)
- Austenitic Stainless Steel 130-200 HB; <600 N/mm^2 UTS(7)
- High Strength Austenitic Stainless and Cast Stainless Steels 150-230 HB; <25 HRC; >600 N/mm^2 UTS(7)
- Duplex Stainless Steel 135-275 HB; <30 HRC; 500-1200 N/mm^2 UTS(7)
- Cast Iron (7)
- Gray Cast Iron 120-290 HB; <32 HRC; 125-500 N/mm^2 UTS(7)
- Low and Medium Strength CGI and Ductile Irons 130-260 HB; <28 HRC; <600 N/mm^2 UTS(7)
- High Strength Ductile and Austempered Ductile Iron 180-350 HB; <43 HRC; >600 N/mm^2 UTS(7)
- Non-Ferrous Materials (7)
- Wrought Aluminum (7)
- Low-Silicon Aluminum Alloys and Magnesium Alloys Si <12.2%(7)
- High-Silicon Aluminum Alloys Si >12.2%(7)
- Copper, Brass, Zinc-based on machinability index range of 70-100 (7)
- Nylon, Plastics, Rubbers, Phenolics, Resins, Fiberglass (7)
- Carbon, Graphite Composites, CFRP (7)
- MMC's (7)
- High-Temp Alloys (7)
- Iron-Based, Heat-Resistant Alloys 160-260 HB; 25-48 HRC; 500-1200 N/mm^2 UTS(7)
- Cobalt-Based, Heat-Resistant Alloys 250-450 HB; 25-48 HRC; 1000-1450 N/mm^2 UTS(7)
- Nickel-Based, Heat Resistant Alloys 160-450 HB; <48 HRC; 600-1700 N/mm^2 UTS(7)
- Titanium and Titanium Alloys 300-400 HB; 33-43 HRC; 900-1600 N/mm^2 UTS(7)
- Hardened Materials (7)
- Hardened Materials 44-48 HRC(7)
- Hardened Materials 48-55 HRC(6)
- Hardened Materials 56-60 HRC(6)
- Hardened Materials >60 HRC(6)
Applications
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(7)
Type of Thread
- (6)
- (7)
- (6)
- (4)
- (3)
- (6)
- (3)
- (3)
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- (6)
- (3)
Cutting Condition Material
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Cutting Condition
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Corner Radius
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Corner Radius
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Application
Minimum Feed
Minimum Feed
Grade Of Cutting Tool
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- (1)
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- (5)
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- (6)
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- (6)
Hand Of Tool
- (2)
- (5)
F Dimension
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Minimum Bore Diameter
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Minimum Bore Diameter
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Maximum Axial Groove Diameter
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Maximum Axial Groove Diameter
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Front-End
Cutting Width
- 1.0 (3)
- 1.19 (2)
- 1.194 (3)
- 1.2 (3)
- 1.5 (3)
- 1.57 (3)
- 1.575 (3)
- 1.75 (3)
- 1.829 (3)
- 1.981 (3)
- 2.0 (3)
- 2.2 (3)
- 2.235 (3)
- 2.24 (1)
- 2.25 (2)
- 2.388 (3)
- 2.39 (2)
- 2.464 (3)
- 2.5 (3)
- 2.667 (3)
- 2.743 (3)
- 2.75 (3)
- 2.794 (3)
- 2.997 (3)
- 3.0 (6)
- 3.099 (3)
- 3.17 (3)
- 3.175 (6)
- 3.18 (2)
- 3.2 (6)
- 3.25 (3)
- 3.251 (3)
- 3.32 (1)
- 3.329 (1)
- 3.5 (6)
- 3.607 (3)
- 3.96 (3)
- 3.962 (3)
- 3.974 (1)
- 3.988 (3)
- 4.0 (6)
- 4.242 (6)
- 4.25 (3)
- 4.3 (3)
- 4.5 (6)
- 4.521 (3)
- 4.6 (1)
- 4.699 (4)
- 4.775 (6)
- 4.78 (1)
- 4.785 (1)
- 4.788 (2)
- 4.8 (3)
- 4.801 (6)
- 4.81 (3)
- 4.88 (1)
- 4.9 (1)
- 4.95 (3)
- 5.0 (3)
- 5.004 (3)
- 5.131 (3)
- 5.41 (3)
- 5.5 (3)
- 5.537 (1)
- 5.563 (3)
- 6.0 (3)
- 6.35 (4)
- 6.36 (2)
- 6.48 (3)
- 7.137 (1)
- 7.925 (1)
- 9.525 (1)
- 9.73 (1)
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Cutting Width
- 0.0394 (3)
- 0.047 (3)
- 0.0472 (3)
- 0.0591 (3)
- 0.062 (3)
- 0.0689 (3)
- 0.072 (3)
- 0.078 (3)
- 0.0787 (3)
- 0.079 (1)
- 0.0866 (3)
- 0.088 (3)
- 0.0886 (2)
- 0.094 (3)
- 0.097 (3)
- 0.0984 (3)
- 0.105 (3)
- 0.108 (3)
- 0.1083 (3)
- 0.11 (3)
- 0.118 (3)
- 0.1181 (6)
- 0.122 (3)
- 0.125 (6)
- 0.126 (6)
- 0.128 (3)
- 0.131 (1)
- 0.1378 (6)
- 0.142 (3)
- 0.156 (3)
- 0.157 (3)
- 0.1574 (6)
- 0.1575 (6)
- 0.167 (6)
- 0.1673 (3)
- 0.169 (3)
- 0.1771 (6)
- 0.1772 (6)
- 0.178 (3)
- 0.185 (4)
- 0.188 (6)
- 0.189 (6)
- 0.192 (1)
- 0.193 (1)
- 0.195 (3)
- 0.1969 (3)
- 0.197 (3)
- 0.202 (3)
- 0.213 (3)
- 0.2165 (3)
- 0.2166 (2)
- 0.218 (1)
- 0.219 (3)
- 0.2362 (3)
- 0.25 (4)
- 0.255 (3)
- 0.281 (1)
- 0.312 (1)
- 0.375 (1)
- 0.383 (1)
- 1.93 (1)
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Insert Geometry
Cutting Tool Material
- (6)
- (3)
- (6)
- (5)
- (6)
- (7)
