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      • All Products
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Harvey Tool Counterbores - Flat Bottom - Long Reach
Features:
  • Undersized neck to avoid heeling
  • Flat Bottom (No Dish) design allows spot facing or counterboring on irregular surfaces
  • Ideal for castings, rounded parts, concaved or drafted surfaces
  • Can be used for flat bottom reaming or straightening misaligned holes
  • Center cutting
  • Ground with full cylidrical margin (not side cutting)
  • 15° Helix
  • 4 Flutes
  • Solid carbide
  • CNC ground in the USA    


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    Tip: Enter a quantity for each item, then scroll down and add to cart
    Item TECH LINK Specs 1 Specs 2 Specs 3 Specs 4 Specs 5 Specs 6 Specs 7 Specs 8 In Stock Price Quantity
    42756981
    25431-C3 Cutter Diameter: 0.0312" (1/32) Neck Diameter: 0.0280" (.7 mm) Flute Length: 0.1250" (1/8) Overall Reach: 0.2500" (1/4) Overall Length: 2.5000" (2-1/2) Flutes: 4 Shank Diameter: 0.1250" (1/8) Coating: AlTiN 10 $41.10
    42756970
    25431 Cutter Diameter: 0.0312" (1/32) Neck Diameter: 0.0280" (.7 mm) Flute Length: 0.1250" (1/8) Overall Reach: 0.2500" (1/4) Overall Length: 2.5000" (2-1/2) Flutes: 4 Shank Diameter: 0.1250" (1/8) Coating: Uncoated 17 $36.20
    42756926
    2541M Cutter Diameter: 0.0394" (1 mm) Neck Diameter: 0.0350" (.9 mm) Flute Length: 0.1560" (5/32) Overall Reach: 0.3130" Overall Length: 2.5000" (2-1/2) Flutes: 4 Shank Diameter: 0.1250" (1/8) Coating: Uncoated 13 $36.20
    42756937
    2541M-C3 Cutter Diameter: 0.0394" (1 mm) Neck Diameter: 0.0350" (.9 mm) Flute Length: 0.1560" (5/32) Overall Reach: 0.3130" Overall Length: 2.5000" (2-1/2) Flutes: 4 Shank Diameter: 0.1250" (1/8) Coating: AlTiN 9 $41.10
    42757003
    25447-C3 Cutter Diameter: 0.0469" (3/64) Neck Diameter: 0.0420" Flute Length: 0.1880" Overall Reach: 0.3750" (3/8) Overall Length: 2.5000" (2-1/2) Flutes: 4 Shank Diameter: 0.1250" (1/8) Coating: AlTiN 18 $41.10
    42756992
    25447 Cutter Diameter: 0.0469" (3/64) Neck Diameter: 0.0420" Flute Length: 0.1880" Overall Reach: 0.3750" (3/8) Overall Length: 2.5000" (2-1/2) Flutes: 4 Shank Diameter: 0.1250" (1/8) Coating: Uncoated 32 $36.20
    42757014
    25462 Cutter Diameter: 0.0625" (1/16) Neck Diameter: 0.0560" Flute Length: 0.2500" (1/4) Overall Reach: 0.5000" (1/2) Overall Length: 2.5000" (2-1/2) Flutes: 4 Shank Diameter: 0.1250" (1/8) Coating: Uncoated 64 $36.20
    42757025
    25462-C3 Cutter Diameter: 0.0625" (1/16) Neck Diameter: 0.0560" Flute Length: 0.2500" (1/4) Overall Reach: 0.5000" (1/2) Overall Length: 2.5000" (2-1/2) Flutes: 4 Shank Diameter: 0.1250" (1/8) Coating: AlTiN 7 $41.10
    42771831
    25478-C3 Cutter Diameter: 0.0781" (5/64) Neck Diameter: 0.0700" Flute Length: 0.3120" (5/16) Overall Reach: 0.6250" (5/8) Overall Length: 2.5000" (2-1/2) Flutes: 4 Shank Diameter: 0.1250" (1/8) Coating: AlTiN 22 $41.10
    42757036
    25478 Cutter Diameter: 0.0781" (5/64) Neck Diameter: 0.0700" Flute Length: 0.3120" (5/16) Overall Reach: 0.6250" (5/8) Overall Length: 2.5000" (2-1/2) Flutes: 4 Shank Diameter: 0.1250" (1/8) Coating: Uncoated 52 $36.20
    42756948
    2542M Cutter Diameter: 0.0787" (2 mm) Neck Diameter: 0.0700" Flute Length: 0.3120" (5/16) Overall Reach: 0.6250" (5/8) Overall Length: 2.5000" (2-1/2) Flutes: 4 Shank Diameter: 0.1250" (1/8) Coating: Uncoated 21 $36.20
    42756959
    2542M-C3 Cutter Diameter: 0.0787" (2 mm) Neck Diameter: 0.0700" Flute Length: 0.3120" (5/16) Overall Reach: 0.6250" (5/8) Overall Length: 2.5000" (2-1/2) Flutes: 4 Shank Diameter: 0.1250" (1/8) Coating: AlTiN 9 $41.10
    42771853
    25493-C3 Cutter Diameter: 0.0937" (3/32) Neck Diameter: 0.0840" Flute Length: 0.3750" (3/8) Overall Reach: 0.7500" (3/4) Overall Length: 2.5000" (2-1/2) Flutes: 4 Shank Diameter: 0.1250" (1/8) Coating: AlTiN 8 $41.10
    42771842
    25493 Cutter Diameter: 0.0937" (3/32) Neck Diameter: 0.0840" Flute Length: 0.3750" (3/8) Overall Reach: 0.7500" (3/4) Overall Length: 2.5000" (2-1/2) Flutes: 4 Shank Diameter: 0.1250" (1/8) Coating: Uncoated 36 $36.20
    42771864
    25507 Cutter Diameter: 0.1094" (7/64) Neck Diameter: 0.0980" (2.5 mm) Flute Length: 0.3750" (3/8) Overall Reach: 0.8750" (7/8) Overall Length: 2.5000" (2-1/2) Flutes: 4 Shank Diameter: 0.1250" (1/8) Coating: Uncoated 23 $36.20
    42771875
    25507-C3 Cutter Diameter: 0.1094" (7/64) Neck Diameter: 0.0980" (2.5 mm) Flute Length: 0.3750" (3/8) Overall Reach: 0.8750" (7/8) Overall Length: 2.5000" (2-1/2) Flutes: 4 Shank Diameter: 0.1250" (1/8) Coating: AlTiN 16 $41.10
    42854199
    2553M-C3 Cutter Diameter: 0.1181" (3 mm) Neck Diameter: 0.1060" (2.7 mm) Flute Length: 0.3750" (3/8) Overall Reach: 1.0000" (1) Overall Length: 2.5000" (2-1/2) Flutes: 4 Shank Diameter: 0.1250" (1/8) Coating: AlTiN 22 $41.10
    42854188
    2553M Cutter Diameter: 0.1181" (3 mm) Neck Diameter: 0.1060" (2.7 mm) Flute Length: 0.3750" (3/8) Overall Reach: 1.0000" (1) Overall Length: 2.5000" (2-1/2) Flutes: 4 Shank Diameter: 0.1250" (1/8) Coating: Uncoated 18 $36.20
    42771886
    25508 Cutter Diameter: 0.1250" (1/8) Neck Diameter: 0.1130" Flute Length: 0.5000" (1/2) Overall Reach: 1.0000" (1) Overall Length: 2.5000" (2-1/2) Flutes: 4 Shank Diameter: 0.1250" (1/8) Coating: Uncoated 33 $36.20
    42771897
    25508-C3 Cutter Diameter: 0.1250" (1/8) Neck Diameter: 0.1130" Flute Length: 0.5000" (1/2) Overall Reach: 1.0000" (1) Overall Length: 2.5000" (2-1/2) Flutes: 4 Shank Diameter: 0.1250" (1/8) Coating: AlTiN 29 $41.10
    42771919
    25509-C3 Cutter Diameter: 0.1406" (9/64) Neck Diameter: 0.1200" Flute Length: 0.5620" (9/16) Overall Reach: 1.1250" (1-1/8) Overall Length: 3.0000" (3) Flutes: 4 Shank Diameter: 0.1875" (3/16) Coating: AlTiN 7 $49.40
    42771908
    25509 Cutter Diameter: 0.1406" (9/64) Neck Diameter: 0.1200" Flute Length: 0.5620" (9/16) Overall Reach: 1.1250" (1-1/8) Overall Length: 3.0000" (3) Flutes: 4 Shank Diameter: 0.1875" (3/16) Coating: Uncoated 28 $44.10
    42771952
    25510 Cutter Diameter: 0.1562" (5/32) Neck Diameter: 0.1330" Flute Length: 0.6250" (5/8) Overall Reach: 1.2500" (1-1/4) Overall Length: 3.0000" (3) Flutes: 4 Shank Diameter: 0.1875" (3/16) Coating: Uncoated 42 $44.10
    42771963
    25510-C3 Cutter Diameter: 0.1562" (5/32) Neck Diameter: 0.1330" Flute Length: 0.6250" (5/8) Overall Reach: 1.2500" (1-1/4) Overall Length: 3.0000" (3) Flutes: 4 Shank Diameter: 0.1875" (3/16) Coating: AlTiN 23 $49.40
    42854221
    2554M-C3 Cutter Diameter: 0.1575" (4 mm) Neck Diameter: 0.1340" Flute Length: 0.6250" (5/8) Overall Reach: 1.2500" (1-1/4) Overall Length: 3.0000" (3) Flutes: 4 Shank Diameter: 0.1875" (3/16) Coating: AlTiN 17 $49.40

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