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Counterbores - 35 - Mega Sale! Save up to 24%


Mega Sale! Up to 24% off on Counterbores at In The National Interest. Top brands include Drill America, HHIP, Meda - Superior Import, Accusize Industrial Tools, KEO Cutters, Value Collection, Made in USA, & Cleveland Twist Drill. Hurry! Limited time offers. Offers valid only while supplies last.



Drill America DEWA/CCBR5/16 DEWCBR Series Qualtech High-Speed Steel Aircraft Counterbore, 1/4'' Shank Diameter, 3/32'' Pilot, 2-3/8'' Length, 5/16'' Size
Drill America DEWA/CCBR5/16 DEWCBR Series Qualtech High-Speed Steel Aircraft Counterbore, 1/4" Shank Diameter, 3/32" Pilot, 2-3/8" Length, 5/16" Size
By Drill America
In Stock
$22.36
$20.42
You Save: 9%

mpn: DEWA/CCBR5/16, ean: 0887861128650,

Drill America qualtech decor series aircraft counter bore. Counter boring is the enlargement of a portion of a hole that has previously been formed. If the counter bored portion is shallow (1/inches or less), the operation is usually known as spot-fa...


HHIP 2007-0021 21 Piece HSS Interchangeable Pilot Counterbore Set
HHIP 2007-0021 21 Piece HSS Interchangeable Pilot Counterbore Set
By HHIP
In Stock
$96.16

mpn: 2007-0021, ean: 0769053007137,

21 Piece High Speed Steel Interchangeable Pilot Counterbore Set ~ Supplied in a fitted case. ~ 14 pilots with a 5/32" shank including 0.187, 0.204, 0.213, 0.229, 1/4, 17/64, 9/32, 5/16, 21/64, 11/32, 3/8, 25/64, 13/32 and 7/16. ~ 6 counterbores inclu...


HHIP 2007-0040 40 Piece HSS Straight-Shank Counterbore Set, 1/4-1 Inch
HHIP 2007-0040 40 Piece HSS Straight-Shank Counterbore Set, 1/4-1 Inch
By HHIP
In Stock
$292.64

mpn: 2007-0040, ean: 0769053007168,

40 Piece 1/4-1" High Sped Steel Straight Shank Counterbore Set ~ Straight shank. ~ Interchangeable pilots. ~ 13 counterbores including 1/4"-1 X 16ths. ~ Supplied in a fitted case. ~ 26 pilots. ~ 3/32" shank X 1/8, 5/32, 3/16 & 1/4". ~ 5/32" shank X 3...


45/64'' Interchangeable Pilot Counterbore
45/64" Interchangeable Pilot Counterbore
By Meda - Superior Import
In Stock
$35.80

mpn: 17752047494,

Overall Length - 5 3/8", Shank Diameter - 1/2" x 3 7/8", Pilot Hole Diameter - 1/4". Used in spot facing and counterboring operations. . These counterbores can be used with a wide variety of pilots. The shank diameter of the pilots ordered must be th...


HHIP 2007-0020 5/16 x 11/32 HSS 3 Flute Solid Pilot Counterbore
HHIP 2007-0020 5/16 x 11/32 HSS 3 Flute Solid Pilot Counterbore
By HHIP
In Stock
$16.95
$12.94
You Save: 24%

mpn: 2007-0020, ean: 0076905300712,

Continuous pilot counterbores cut rapidly, smoothly and accurately, producing long spiraling chips rather than small metal particles The pilot extends the full Length of the flute portion of the tool As cutter flutes are Ground back due to wear, a ne...


AccusizeTools - Metric H.S.S. Solid Cap Screw Counterbore Set, 3 Flute, Straight Shank, 7 Pcs/Set, 508S-007M
AccusizeTools - Metric H.S.S. Solid Cap Screw Counterbore Set, 3 Flute, Straight Shank, 7 Pcs/Set, 508S-007M
By Accusize Industrial Tools
In Stock
$59.00
$52.80
You Save: 11%

mpn: 508S-007M, ean: 0641799805324,

Metric HSS Solid Capscrew Counterbore 7 Pcs/Set, 3 Flute, Straight Shank, #508S-007M Metric Set (7PC): M3, M4, M5, M6, M8, M10, M12 H.S.S. Straight Shank...


KEO 55234 Cobalt Steel Precision 3 Flutes Cap Screw Counterbore, Integral Pilot, Uncoated (Bright) Finish, 1.203'' Diameter, 3/4'' Size
KEO 55234 Cobalt Steel Precision 3 Flutes Cap Screw Counterbore, Integral Pilot, Uncoated (Bright) Finish, 1.203" Diameter, 3/4" Size
By KEO Cutters
In Stock
$228.37
$184.46
You Save: 19%

mpn: 55234,

Precision 3-flute cap screw Kounterbore. Integral pilot, straight shank, CNC precision ground. Cobalt HSS. Micro-smooth CNC precision ground for precision smooth counterboring. M35 Cobalt: HSS, 6 percent Tungsten, 5 percent Moly, 5 percent Cobalt - l...


1-3/4'' Diam, 5 Flutes, Morse Taper Shank, Interchangeable Pilot Counterbore pack of 2
1-3/4" Diam, 5 Flutes, Morse Taper Shank, Interchangeable Pilot Counterbore pack of 2
By Value Collection
In Stock
$887.04

mpn: NA, ean: 7440011765797,

High speed steel (HSS) provides good wear resistance and can be used in general purpose applications on both ferrous and nonferrous materials. Specification:Counterbore Diameter (Inch): 1-3/4Pilot Shank Diameter Compatibility (Inch): 7/16Counterbore ...


1-3/4'' Diam, 1-1/4'' Shank, Diam, 5 Flutes, Straight Shank, Interchangeable Pilot Counterbore pack of 2
1-3/4" Diam, 1-1/4" Shank, Diam, 5 Flutes, Straight Shank, Interchangeable Pilot Counterbore pack of 2
By Value Collection
In Stock
$1,431.94

mpn: NA, ean: 7440012318367,

Cobalt is harder than high speed steel and provides better wear resistance. It is commonly used on high tensile alloys. Specification:Counterbore Diameter (Inch): 1-3/4Pilot Shank Diameter Compatibility (Inch): 7/16Shank Diameter (Inch): 1-1/4Counter...


13/32'' Diam, 3/8'' Shank, Diam, 3 Flutes, Straight Shank, Interchangeable Pilot Counterbore pack of 3
13/32" Diam, 3/8" Shank, Diam, 3 Flutes, Straight Shank, Interchangeable Pilot Counterbore pack of 3
By Value Collection
In Stock
$233.77

mpn: NA, ean: 7440007799775,

High speed steel (HSS) provides good wear resistance and can be used in general purpose applications on both ferrous and nonferrous materials. Specification:Counterbore Diameter (Inch): 13/32Pilot Shank Diameter Compatibility (Inch): 5/32Shank Diamet...


1/2'' Diam, 7/16'' Shank, Diam, 3 Flutes, Straight Shank, Interchangeable Pilot Counterbore pack of 3
1/2" Diam, 7/16" Shank, Diam, 3 Flutes, Straight Shank, Interchangeable Pilot Counterbore pack of 3
By Value Collection
In Stock
$244.40

mpn: NA, ean: 7440008121148,

High speed steel (HSS) provides good wear resistance and can be used in general purpose applications on both ferrous and nonferrous materials. Specification:Counterbore Diameter (Inch): 1/2Pilot Shank Diameter Compatibility (Inch): 3/16Shank Diameter...


3/4'' Head Diam, 7/16'' Shank Diam, Counterbore Pilot pack of 3
3/4" Head Diam, 7/16" Shank Diam, Counterbore Pilot pack of 3
By Made in USA
In Stock
$190.21

mpn: NA, ean: 7440007143158,

Specification:Head Diameter (Inch): 3/4Shank Diameter (Inch): 7/16Pilot Material: Carbon SteelHead Diameter (Inch): 3/4. Shank Diameter (Inch): 7/16. Pilot Material: Carbon Steel. ...


1-5/16'' Head Diam, 1/2'' Shank Diam, Counterbore Pilot pack of 3
1-5/16" Head Diam, 1/2" Shank Diam, Counterbore Pilot pack of 3
By Value Collection
In Stock
$204.73

mpn: NA, ean: 7440007962988,

Specification:Head Diameter (Inch): 1-5/16Shank Diameter (Inch): 1/2Pilot Material: Carbon SteelHead Diameter (Inch): 1-5/16. Shank Diameter (Inch): 1/2. Pilot Material: Carbon Steel. ...


1-3/16'' Diam, 1/2'' Shank, Diam, 4 Flutes, Straight Shank, Interchangeable Pilot Counterbore pack of 2
1-3/16" Diam, 1/2" Shank, Diam, 4 Flutes, Straight Shank, Interchangeable Pilot Counterbore pack of 2
By Value Collection
In Stock
$514.93

mpn: NA, ean: 7440010285234,

High speed steel (HSS) provides good wear resistance and can be used in general purpose applications on both ferrous and nonferrous materials. Specification:Counterbore Diameter (Inch): 1-3/16Pilot Shank Diameter Compatibility (Inch): 3/16Shank Diame...


15/64'' Diam, 15/64'' Shank, Diam, 3 Flutes, Straight Shank, Interchangeable Pilot Counterbore pack of 2
15/64" Diam, 15/64" Shank, Diam, 3 Flutes, Straight Shank, Interchangeable Pilot Counterbore pack of 2
By Value Collection
In Stock
$265.98

mpn: NA, ean: 7440009849805,

Cobalt is harder than high speed steel and provides better wear resistance. It is commonly used on high tensile alloys. Specification:Counterbore Diameter (Inch): 15/64Pilot Shank Diameter Compatibility (Inch): 3/32Shank Diameter (Inch): 15/64Counter...


3/16'' Head Diam, 3/32'' Shank Diam, Counterbore Pilot pack of 3
3/16" Head Diam, 3/32" Shank Diam, Counterbore Pilot pack of 3
By Cleveland Twist Drill
In Stock
$132.07

mpn: NA, ean: 7440006726758,

Specification:Head Diameter (Inch): 3/16Shank Diameter (Inch): 3/32Finish/Coating: BrightAircraft-Style: NoPilot Material: High Speed SteelMaterial Application: Alloy Tool Steel; Aluminum; Cast Iron; Low Carbon Steel; Medium Carbon SteelHead Diameter...


5/8'' Head Diam, 5/16'' Shank Diam, Counterbore Pilot pack of 3
5/8" Head Diam, 5/16" Shank Diam, Counterbore Pilot pack of 3
By Made in USA
In Stock
$151.73

mpn: NA, ean: 7440006069091,

Specification:Head Diameter (Inch): 5/8Shank Diameter (Inch): 5/16Finish/Coating: BrightAircraft-Style: NoPilot Material: Carbon SteelHead Diameter (Inch): 5/8. Shank Diameter (Inch): 5/16. Finish/Coating: Bright. Aircraft-Style: No. Pilot Material: ...


13/16'' Diam, 5/8'' Shank, Diam, 3 Flutes, Straight Shank, Interchangeable Pilot Counterbore pack of 2
13/16" Diam, 5/8" Shank, Diam, 3 Flutes, Straight Shank, Interchangeable Pilot Counterbore pack of 2
By Value Collection
In Stock
$733.30

mpn: NA, ean: 7440011543555,

Carbide tips cuts faster than high speed steel. It is commonly used on ferrous and nonferrous materials including cast iron, steel and steel alloys. Specification:Counterbore Diameter (Inch): 13/16Pilot Shank Diameter Compatibility (Inch): 1/4Shank D...


25/32'' Diam, 1/2'' Shank, Diam, 4 Flutes, Straight Shank, Interchangeable Pilot Counterbore pack of 2
25/32" Diam, 1/2" Shank, Diam, 4 Flutes, Straight Shank, Interchangeable Pilot Counterbore pack of 2
By Value Collection
In Stock
$316.01

mpn: NA, ean: 7440009784786,

High speed steel (HSS) provides good wear resistance and can be used in general purpose applications on both ferrous and nonferrous materials. Specification:Counterbore Diameter (Inch): 25/32Pilot Shank Diameter Compatibility (Inch): 3/16Shank Diamet...


5/8'' Head Diam, 3/8'' Shank Diam, Counterbore Pilot pack of 3
5/8" Head Diam, 3/8" Shank Diam, Counterbore Pilot pack of 3
By Made in USA
In Stock
$162.43

mpn: NA, ean: 7440006289239,

Specification:Head Diameter (Inch): 5/8Shank Diameter (Inch): 3/8Finish/Coating: BrightAircraft-Style: NoPilot Material: Carbon SteelHead Diameter (Inch): 5/8. Shank Diameter (Inch): 3/8. Finish/Coating: Bright. Aircraft-Style: No. Pilot Material: Ca...



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