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LT Threading Boring Bars

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Workpiece Material
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  • P Steel (52)
    • P0
      Low-Carbon Steels, Long Chipping C < .25%; <125 HB; <530 N/mm^2 UTS (52)
    • P1
      Low-Carbon Steels, Short Chipping C < .25%; <125 HB; <530 N/mm^2 UTS (52)
    • P2
      Medium and High Carbon Steels C < .25%; <220 HB; <25 HRC; >530 N/mm^2 UTS (52)
    • P3
      Alloy Steels & Tool Steels C > .25%; <330 HB; <35 HRC; 600-850 N/mm^2 UTS (52)
    • P4
      Alloy Steels & Tool Steels C > .25%; 350-420 HB; 35-43 HRC; 850-1400 N/mm^2 UTS (52)
    • P5
      Ferritic, Martensitic, and PH Stainless Steels <330 HB; <35 HRC; 600-900 N/mm^2 UTS (52)
    • P6
      High Strength Ferritic, Martensitic, and PH Stainless Steels 350-450 HB; 35-43 HRC; 900-2400 N/mm^2 UTS (52)
  • M Stainless Steel (52)
    • M1
      Austenitic Stainless Steel 130-200 HB; <600 N/mm^2 UTS (52)
    • M2
      High Strength Austenitic Stainless and Cast Stainless Steels 150-230 HB; <25 HRC; >600 N/mm^2 UTS (52)
    • M3
      Duplex Stainless Steel 135-275 HB; <30 HRC; 500-1200 N/mm^2 UTS (52)
  • K Cast Iron (52)
    • K1
      Gray Cast Iron 120-290 HB; <32 HRC; 125-500 N/mm^2 UTS (52)
    • K2
      Low and Medium Strength CGI and Ductile Irons 130-260 HB; <28 HRC; <600 N/mm^2 UTS (52)
    • K3
      High Strength Ductile and Austempered Ductile Iron 180-350 HB; <43 HRC; >600 N/mm^2 UTS (52)
  • N Non-Ferrous Materials (52)
    • N1
      Wrought Aluminum (52)
    • N2
      Low-Silicon Aluminum Alloys and Magnesium Alloys Si <12.2% (52)
    • N3
      High-Silicon Aluminum Alloys Si >12.2% (52)
    • N4
      Copper, Brass, Zinc-based on machinability index range of 70-100 (52)
    • N5
      Nylon, Plastics, Rubbers, Phenolics, Resins, Fiberglass (52)
    • N6
      Carbon, Graphite Composites, CFRP (52)
    • N7
      MMC's (52)
  • S High-Temp Alloys (52)
    • S1
      Iron-Based, Heat-Resistant Alloys 160-260 HB; 25-48 HRC; 500-1200 N/mm^2 UTS (52)
    • S2
      Cobalt-Based, Heat-Resistant Alloys 250-450 HB; 25-48 HRC; 1000-1450 N/mm^2 UTS (52)
    • S3
      Nickel-Based, Heat Resistant Alloys 160-450 HB; <48 HRC; 600-1700 N/mm^2 UTS (52)
    • S4
      Titanium and Titanium Alloys 300-400 HB; 33-43 HRC; 900-1600 N/mm^2 UTS (52)
  • H Hardened Materials (52)
    • H1
      Hardened Materials 44-48 HRC (52)
Type of Thread
Type of Thread
  • 55 (52)
  • 60 (52)
  • ACME (39)
  • API (13)
  • API BUTTRESS (13)
  • API RD (26)
  • BSPT (39)
  • BSW (52)
  • M (52)
  • NPT (39)
  • NPTF (39)
  • RD DIN 405 (39)
  • STUB ACME (39)
  • TR DIN 103 (39)
  • UN (39)
  • UNJ (39)
Over All Length [L]
Over All Length [L]
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Over All Length [L] Min to Over All Length [L] Max
Over All Length [L]
Over All Length [L]
  • 60.0 mm (1)
  • 100.0 mm (2)
  • 150.0 mm (2)
  • 152.4 mm (2)
  • 177.8 mm (8)
  • 180.0 mm (11)
  • 200.0 mm (5)
  • 203.201 mm (1)
  • 250.0 mm (6)
  • 254.0 mm (10)
  • 300.0 mm (2)
  • 304.8 mm (2)
Over All Length [L] Min to Over All Length [L] Max
Corner configuration
Corner Radius
Corner Radius
  • 0.001 in (23)
  • 0.002 in (39)
  • 0.003 in (26)
  • 0.004 in (16)
  • 0.006 in (26)
  • 0.008 in (26)
  • 0.01 in (7)
  • 0.012 in (13)
  • 0.017 in (13)
  • 0.028 in (16)
  • 0.037 in (8)
Corner Radius Min to Corner Radius Max
Corner Radius
Corner Radius
  • 0.025 mm (23)
  • 0.05 mm (39)
  • 0.076 mm (26)
  • 0.1 mm (16)
  • 0.151 mm (26)
  • 0.2 mm (26)
  • 0.225 mm (7)
  • 0.301 mm (13)
  • 0.426 mm (13)
  • 0.701 mm (16)
  • 0.925 mm (8)
Corner Radius Min to Corner Radius Max
Application
Grade Of Cutting Tool
Grade Of Cutting Tool
  • K00331 (16)
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  • KC5010 (23)
  • KC5025 (52)
  • KC710 (24)
  • KC720 (47)
  • KC722 (23)
  • KC730 (52)
  • KU25T (23)
  • SP4066 (10)
Hand Of Tool
Hand Of Tool
  • L (21)
  • R (31)
F Dimension
F Dimension
  • 7.101 mm (4)
  • 7.301 mm (4)
  • 8.9 mm (5)
  • 10.3 mm (1)
  • 11.3 mm (2)
  • 11.5 mm (2)
  • 11.675 mm (4)
  • 11.701 mm (1)
  • 12.951 mm (4)
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  • 17.401 mm (1)
  • 18.026 mm (3)
  • 19.55 mm (1)
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F Dimension Min to F Dimension Max
F Dimension
F Dimension
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  • 0.77 in (1)
  • 0.846 in (2)
  • 0.85 in (1)
  • 1.016 in (2)
F Dimension Min to F Dimension Max
Minimum Axial Groove Diameter
Minimum Axial Groove Diameter
  • 12.701 mm (4)
  • 13.0 mm (4)
  • 16.0 mm (2)
  • 16.5 mm (3)
  • 17.0 mm (1)
  • 20.0 mm (5)
  • 20.326 mm (4)
  • 22.85 mm (4)
  • 24.0 mm (3)
  • 27.0 mm (2)
  • 29.0 mm (5)
  • 30.475 mm (3)
  • 31.75 mm (3)
  • 32.0 mm (3)
  • 36.825 mm (1)
  • 38.1 mm (1)
  • 39.0 mm (2)
  • 47.0 mm (2)
Minimum Axial Groove Diameter Min to Minimum Axial Groove Diameter Max
Minimum Axial Groove Diameter
Minimum Axial Groove Diameter
  • 0.5 in (4)
  • 0.512 in (4)
  • 0.63 in (2)
  • 0.65 in (3)
  • 0.669 in (1)
  • 0.787 in (5)
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  • 0.9 in (4)
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  • 1.063 in (2)
  • 1.143 in (5)
  • 1.2 in (3)
  • 1.25 in (3)
  • 1.26 in (3)
  • 1.45 in (1)
  • 1.5 in (1)
  • 1.536 in (2)
  • 1.85 in (2)
Minimum Axial Groove Diameter Min to Minimum Axial Groove Diameter Max
Maximum Bore Depth
Maximum Bore Depth
  • 0.984 in (2)
  • 1.0 in (2)
  • 1.25 in (2)
  • 1.26 in (3)
  • 1.415 in (1)
  • 1.5 in (2)
  • 1.57 in (1)
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  • 3.75 in (2)
  • 3.781 in (1)
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  • 5.0 in (2)
  • 5.039 in (3)
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  • 6.0 in (2)
  • 6.299 in (2)
Maximum Bore Depth Min to Maximum Bore Depth Max
Maximum Bore Depth
Maximum Bore Depth
  • 25.0 mm (2)
  • 25.401 mm (2)
  • 31.75 mm (2)
  • 32.0 mm (3)
  • 35.95 mm (1)
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  • 40.0 mm (3)
  • 57.151 mm (2)
  • 60.0 mm (2)
  • 63.5 mm (4)
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  • 80.0 mm (4)
  • 95.25 mm (2)
  • 96.0 mm (1)
  • 100.0 mm (4)
  • 114.301 mm (2)
  • 120.0 mm (1)
  • 127.0 mm (2)
  • 128.0 mm (3)
  • 150.0 mm (1)
  • 152.4 mm (2)
  • 160.0 mm (2)
Maximum Bore Depth Min to Maximum Bore Depth Max
Boring Bar Material
Boring Bar Material
  • C (12)
  • S (40)
Front-End
Clamp Style
Clamp Style
  • C (14)
  • M (23)
  • S (15)
Back-End
Back-End Diameter
Back-End Diameter
  • 9.525 mm (2)
  • 10.0 mm (2)
  • 12.701 mm (1)
  • 15.875 mm (2)
  • 16.0 mm (3)
  • 19.05 mm (10)
  • 20.0 mm (12)
  • 25.0 mm (5)
  • 25.401 mm (2)
  • 31.75 mm (6)
  • 32.0 mm (5)
  • 40.0 mm (2)
Back-End Diameter Min to Back-End Diameter Max
Back-End Diameter
Back-End Diameter
  • 0.375 in (2)
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  • 1.575 in (2)
Back-End Diameter Min to Back-End Diameter Max
Shank Height
Shank Height
  • 0.584 in (2)
  • 0.606 in (1)
  • 0.741 in (11)
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Shank Height Min to Shank Height Max
Shank Height
Shank Height
  • 14.826 mm (2)
  • 15.4 mm (1)
  • 18.825 mm (11)
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  • 23.826 mm (4)
  • 24.401 mm (1)
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Shank Height Min to Shank Height Max
Shank Width
Shank Width
  • 0.864 in (4)
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Shank Width Min to Shank Width Max
Shank Width
Shank Width
  • 21.951 mm (4)
  • 28.951 mm (5)
  • 36.95 mm (2)
Shank Width Min to Shank Width Max
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