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    230 Products
    About Drill Bits
    industrial info icon

    Compare material, finish, length class, and decimal size equivalents.

    Coolant-Fed Carbide Drill Bits

    The hardest and most wear-resistant bits, these deliver coolant to reduce heat and evacuate chips. They are designed for CNC machines that supply coolant through the spindle rather than an external source, such as a hose and nozzle. Coolant flows directly from holes in the bit's tip onto the drilling surface. This speeds up cuts and leads to excellent performance in deep holes and tough materials such as stainless steel and titanium.
    Jobbers' Length—These bits have the balance of rigidity and length needed for most applications.
    Maintenance Length—Shorter than jobbers' length, these bits are more rigid for less wobble when drilling hard material. Also known as mechanics’ bits.
    Titanium Aluminum Nitride (TiAlN) Coated—No drill bits last longer. These are the best for high-speed, high-temperature drilling of very hard and abrasive materials, including titanium and fiberglass.
    Shank
    Drill Bit
    Size
    Decimal Size
    Equiv.
    Overall
    Lg.
    Max. Drilling
    Dp.
    Type
    Size
    Drill Bit Point
    Type
    Mfr.
    Each
    Jobbers' Length
    Image of Product. Front orientation. Drill Bits. Coolant-Fed Carbide Drill Bits, Jobbers' Length, Round Shank.

    Round Shank

     
    Titanium Aluminum Nitride (TiAlN) Coated
    1/8"
    		0.125"
    		2"0.75"Round
    		1/8"Four Facet
    		Garr Tool2396N507000000
    9/64"
    		0.1406"
    		2 1/4"0.88"Round
    		9/64"Four Facet
    		Garr Tool2396N9600000
    5/32"
    		0.1563"
    		2 1/2"0.94"Round
    		5/32"Four Facet
    		Garr Tool2396N95400000
    11/64"
    		0.1719"
    		2 1/2"1"Round
    		11/64"Four Facet
    		Garr Tool2396N59200000
    3/16"
    		0.1875"
    		2 3/4"1.25"Round
    		3/16"Four Facet
    		Garr Tool2396N6200000
    13/64"
    		0.2031"
    		3"1.31"Round
    		13/64"Four Facet
    		Garr Tool2396N61700000
    7/32"
    		0.2188"
    		3"1.38"Round
    		7/32"Four Facet
    		Garr Tool2396N62700000
    1/4"
    		0.25"
    		3 1/4"1.63"Round
    		1/4"Four Facet
    		Garr Tool2396N49200000
    17/64"
    		0.2656"
    		3 1/2"1.69"Round
    		17/64"Four Facet
    		Garr Tool2396N94800000
    9/32"
    		0.2813"
    		3 1/2"1.75"Round
    		9/32"Four Facet
    		Garr Tool2396N588000000
    5/16"
    		0.3125"
    		3 3/4"1.88"Round
    		5/16"Four Facet
    		Garr Tool2396N925000000
    3/8"
    		0.375"
    		4 1/4"2.38"Round
    		3/8"Four Facet
    		Garr Tool2396N516000000
    7/16"
    		0.4375"
    		4 3/4"2.81"Round
    		7/16"Four Facet
    		Garr Tool2396N539000000
    1/2"
    		0.5"
    		5 3/8"3.06"Round
    		1/2"Four Facet
    		Garr Tool2396N484000000
    3.0 mm
    		0.1181"
    		67 mm27.9 mmRound
    		6 mmFour Facet
    		Garr Tool2396N21300000
    4.0 mm
    		0.1575"
    		73 mm36.1 mmRound
    		6 mmFour Facet
    		Garr Tool2396N25700000
    5.0 mm
    		0.1969"
    		83 mm43.9 mmRound
    		6 mmFour Facet
    		Garr Tool2396N2600000
    6.0 mm
    		0.2362"
    		83 mm43.9 mmRound
    		6 mmFour Facet
    		Garr Tool2396N26800000
    7.0 mm
    		0.2756"
    		92 mm53.1 mmRound
    		8 mmFour Facet
    		Garr Tool2396N277000000
    7.5 mm
    		0.2953"
    		92 mm53.1 mmRound
    		8 mmFour Facet
    		Garr Tool2396N28000000
    8.0 mm
    		0.315"
    		92 mm53.1 mmRound
    		8 mmFour Facet
    		Garr Tool2396N287000000
    8.5 mm
    		0.3346"
    		102 mm61 mmRound
    		10 mmFour Facet
    		Garr Tool2396N342000000
    9.0 mm
    		0.3543"
    		102 mm61 mmRound
    		10 mmFour Facet
    		Garr Tool2396N416000000
    9.5 mm
    		0.374"
    		102 mm61 mmRound
    		10 mmFour Facet
    		Garr Tool2396N481000000
    10.0 mm
    		0.3937"
    		102 mm61 mmRound
    		10 mmFour Facet
    		Garr Tool2396N138000000
     
    Maintenance Length
    Image of Product. Side1 orientation. Drill Bits. Coolant-Fed Carbide Drill Bits, Maintenance Length, Round Shank.

    Round Shank

     
    Titanium Aluminum Nitride (TiAlN) Coated
    1/8"
    		0.125"
    		1 15/16"0.69"Round
    		1/8"Four Facet
    		Garr Tool2396N81700000
    9/64"
    		0.1406"
    		2 1/16"0.75"Round
    		9/64"Four Facet
    		Garr Tool2396N99500000
    5/32"
    		0.1563"
    		2 3/16"0.81"Round
    		5/32"Four Facet
    		Garr Tool2396N98800000
    11/64"
    		0.1719"
    		2 9/32"0.94"Round
    		11/64"Four Facet
    		Garr Tool2396N8600000
    3/16"
    		0.1875"
    		2 13/32"1"Round
    		3/16"Four Facet
    		Garr Tool2396N83500000
    13/64"
    		0.2031"
    		2 13/32"1"Round
    		13/64"Four Facet
    		Garr Tool2396N86800000
    7/32"
    		0.2188"
    		2 5/8"1.09"Round
    		7/32"Four Facet
    		Garr Tool2396N88900000
    1/4"
    		0.25"
    		2 3/4"1.22"Round
    		1/4"Four Facet
    		Garr Tool2396N80800000
    17/64"
    		0.2656"
    		2 15/16"1.34"Round
    		17/64"Four Facet
    		Garr Tool2396N97600000
    9/32"
    		0.2813"
    		2 15/16"1.34"Round
    		9/32"Four Facet
    		Garr Tool2396N89100000
    5/16"
    		0.3125"
    		3 3/32"1.47"Round
    		5/16"Four Facet
    		Garr Tool2396N871000000
    3/8"
    		0.375"
    		3 1/2"1.69"Round
    		3/8"Four Facet
    		Garr Tool2396N858000000
    7/16"
    		0.4375"
    		3 3/4"1.81"Round
    		7/16"Four Facet
    		Garr Tool2396N88000000
    1/2"
    		0.5"
    		4"1.94"Round
    		1/2"Four Facet
    		Garr Tool2396N788000000
    3.0 mm
    		0.1181"
    		64 mm20.1 mmRound
    		6 mmFour Facet
    		Garr Tool2396N63400000
    4.0 mm
    		0.1575"
    		67 mm23.9 mmRound
    		6 mmFour Facet
    		Garr Tool2396N63800000
    5.0 mm
    		0.1969"
    		67 mm27.9 mmRound
    		6 mmFour Facet
    		Garr Tool2396N65800000
    6.0 mm
    		0.2362"
    		67 mm27.9 mmRound
    		6 mmFour Facet
    		Garr Tool2396N66300000
    7.0 mm
    		0.2756"
    		79 mm34 mmRound
    		8 mmFour Facet
    		Garr Tool2396N679000000
    7.5 mm
    		0.2953"
    		79 mm40.9 mmRound
    		8 mmFour Facet
    		Garr Tool2396N695000000
    8.0 mm
    		0.315"
    		79 mm40.9 mmRound
    		8 mmFour Facet
    		Garr Tool2396N713000000
    8.5 mm
    		0.3346"
    		89 mm47 mmRound
    		10 mmFour Facet
    		Garr Tool2396N718000000
    9.0 mm
    		0.3543"
    		89 mm47 mmRound
    		10 mmFour Facet
    		Garr Tool2396N734000000
    9.5 mm
    		0.374"
    		89 mm88.9 mmRound
    		10 mmFour Facet
    		Garr Tool2396N757000000
    10.0 mm
    		0.3937"
    		89 mm47 mmRound
    		10 mmFour Facet
    		Garr Tool2396N63000000
     

    Coolant-Fed Carbide-Tipped Drill Bits

    Image of Product. Front orientation. Contains Inset. Drill Bits. Coolant-Fed Carbide-Tipped Drill Bits, Extended Length, Round Shank.
    Image of Specification. Standard. Front orientation. Contains Border. Standard Point. For Metal.

    Extended Length

    Round Shank

    Standard

    Channel coolant through the holes to reduce heat and evacuate chips more efficiently than other bits. These are designed for CNC machines that supply coolant through the spindle rather than an external source, such as a hose and nozzle. Coolant flows directly from the bit's tip onto the drilling surface. This speeds up cuts and leads to excellent performance in deep holes and tough materials such as stainless steel and titanium. A lower-price alternative to solid carbide, they stay sharp when drilling abrasive material but won’t last as long.
    Extended Length—Also known as gun drills, drill through panels and thick workpieces with our longest bits. Their length is good for creating deep holes but makes them less rigid than other bits. As a result, they are more prone to wobbling or breaking, especially when drilling hard materials.
    Shank
    Drill Bit
    Size
    Decimal Size
    Equiv.
    Overall
    Lg.
    Max. Drilling
    Dp.
    Type
    Size
    Drill Bit
    Point Type
    Mfr.
    Each
    Extended Length
     
    Uncoated
    1/8"
    		0.125"
    		10"7"Round
    		0.7498"Standard
    		Drill Masters2744N1250000000
    1/8"
    		0.125"
    		12"8.5"Round
    		0.7498"Standard
    		Drill Masters2744N153000000
    1/8"
    		0.125"
    		16"12.5"Round
    		0.7498"Standard
    		Drill Masters2744N209000000
    5/32"
    		0.1563"
    		10"7"Round
    		0.7498"Standard
    		Drill Masters2744N211000000
    5/32"
    		0.1563"
    		12"8.5"Round
    		0.7498"Standard
    		Drill Masters2744N24000000
    5/32"
    		0.1563"
    		16"12.5"Round
    		0.7498"Standard
    		Drill Masters2744N285000000
    3/16"
    		0.1875"
    		10"7"Round
    		0.7498"Standard
    		Drill Masters2744N302000000
    3/16"
    		0.1875"
    		12"8.5"Round
    		0.7498"Standard
    		Drill Masters2744N326000000
    3/16"
    		0.1875"
    		16"12.5"Round
    		0.7498"Standard
    		Drill Masters2744N349000000
    7/32"
    		0.2188"
    		10"7"Round
    		0.7498"Standard
    		Drill Masters2744N364000000
    7/32"
    		0.2188"
    		12"8.5"Round
    		0.7498"Standard
    		Drill Masters2744N365000000
    7/32"
    		0.2188"
    		16"12.5"Round
    		0.7498"Standard
    		Drill Masters2744N381000000
    7/32"
    		0.2188"
    		22"18"Round
    		0.7498"Standard
    		Drill Masters2744N43000000
    1/4"
    		0.25"
    		10"7"Round
    		0.7498"Standard
    		Drill Masters2744N435000000
    1/4"
    		0.25"
    		12"8.5"Round
    		0.7498"Standard
    		Drill Masters2744N442000000
    1/4"
    		0.25"
    		16"12.5"Round
    		0.7498"Standard
    		Drill Masters2744N455000000
    1/4"
    		0.25"
    		22"18"Round
    		0.7498"Standard
    		Drill Masters2744N465000000
    1/4"
    		0.25"
    		28"24"Round
    		0.7498"Standard
    		Drill Masters2744N473000000
    17/64"
    		0.2656"
    		10"7"Round
    		0.7498"Standard
    		Drill Masters2744N48000000
    17/64"
    		0.2656"
    		12"8.5"Round
    		0.7498"Standard
    		Drill Masters2744N536000000
    17/64"
    		0.2656"
    		16"12.5"Round
    		0.7498"Standard
    		Drill Masters2744N576000000
    17/64"
    		0.2656"
    		22"18"Round
    		0.7498"Standard
    		Drill Masters2744N583000000
    17/64"
    		0.2656"
    		28"24"Round
    		0.7498"Standard
    		Drill Masters2744N589000000
    9/32"
    		0.2813"
    		10"7"Round
    		0.7498"Standard
    		Drill Masters2744N619000000
    9/32"
    		0.2813"
    		12"8.5"Round
    		0.7498"Standard
    		Drill Masters2744N622000000
    9/32"
    		0.2813"
    		16"12.5"Round
    		0.7498"Standard
    		Drill Masters2744N625000000
    9/32"
    		0.2813"
    		22"18"Round
    		0.7498"Standard
    		Drill Masters2744N627000000
    9/32"
    		0.2813"
    		28"24"Round
    		0.7498"Standard
    		Drill Masters2744N631000000
    5/16"
    		0.3125"
    		10"7"Round
    		0.7498"Standard
    		Drill Masters2744N656000000
    5/16"
    		0.3125"
    		12"8.5"Round
    		0.7498"Standard
    		Drill Masters2744N664000000
    5/16"
    		0.3125"
    		16"12.5"Round
    		0.7498"Standard
    		Drill Masters2744N674000000
    5/16"
    		0.3125"
    		22"18"Round
    		0.7498"Standard
    		Drill Masters2744N704000000
    5/16"
    		0.3125"
    		28"24"Round
    		0.7498"Standard
    		Drill Masters2744N718000000
    3/8"
    		0.375"
    		10"7"Round
    		0.7498"Standard
    		Drill Masters2744N751000000
    3/8"
    		0.375"
    		12"8.5"Round
    		0.7498"Standard
    		Drill Masters2744N759000000
    3/8"
    		0.375"
    		16"12.5"Round
    		0.7498"Standard
    		Drill Masters2744N787000000
    3/8"
    		0.375"
    		22"18"Round
    		0.7498"Standard
    		Drill Masters2744N79000000
    3/8"
    		0.375"
    		28"24"Round
    		0.7498"Standard
    		Drill Masters2744N793000000
    13/32"
    		0.4063"
    		10"7"Round
    		0.7498"Standard
    		Drill Masters2744N797000000
    13/32"
    		0.4063"
    		12"8.5"Round
    		0.7498"Standard
    		Drill Masters2744N831000000
    13/32"
    		0.4063"
    		16"12.5"Round
    		0.7498"Standard
    		Drill Masters2744N835000000
    13/32"
    		0.4063"
    		22"18"Round
    		0.7498"Standard
    		Drill Masters2744N84000000
    13/32"
    		0.4063"
    		28"24"Round
    		0.7498"Standard
    		Drill Masters2744N861000000
    13/32"
    		0.4063"
    		36"32"Round
    		0.7498"Standard
    		Drill Masters2744N876000000
    1/2"
    		0.5"
    		10"7"Round
    		0.7498"Standard
    		Drill Masters2744N892000000
    1/2"
    		0.5"
    		12"8.5"Round
    		0.7498"Standard
    		Drill Masters2744N906000000
    1/2"
    		0.5"
    		16"12.5"Round
    		0.7498"Standard
    		Drill Masters2744N95000000
    1/2"
    		0.5"
    		22"18"Round
    		0.7498"Standard
    		Drill Masters2744N955000000
    1/2"
    		0.5"
    		28"24"Round
    		0.7498"Standard
    		Drill Masters2744N961000000
    1/2"
    		0.5"
    		36"32"Round
    		0.7498"Standard
    		Drill Masters2744N977000000
     

    Carbide-Insert Drill Bits

    Image of Product. Shown with Carbide Inserts (Sold Separately). Front orientation. Contains Inset. Drill Bits. Carbide-Insert Drill Bits.

    Shown with Carbide Inserts

    (Sold Separately)

    When you need to drill dozens or even hundreds of holes, use a bit with replaceable carbide inserts. Once the cutting edges wear down, just change the inserts instead of sharpening or throwing the bit away. The holes in the bit channel coolant through the tool for more efficient chip evacuation. Also known as indexable drill bits.
    Each drill bit requires two inserts—one on the inner cutting edge and one on the outer cutting edge. Replacement inserts are sold separately.
    Drill Bits
    Replacement
    Insert Screws
    Shank
    For Insert
    Drill Bit
    Size
    Decimal Size
    Equiv.
    Overall
    Lg.
    Max. Drilling
    Dp.
    Type
    Size
    Drill Bit Point
    Type
    Inner Inscribed
    Circle Dia.
    Outer Inscribed
    Circle Dia.
    Mfr.
    Each
    Each
    1/2"
    		0.5"
    		4"1 1/2"Round
    		3/4"Carbide Insert
    		0.189"0.189"Sandvik Coromant2769N1100000002780N1100000
    1/2"
    		0.5"
    		5"2 1/2"Round
    		3/4"Carbide Insert
    		0.189"0.189"Sandvik Coromant2769N120000002780N110000
    9/16"
    		0.562"
    		4 1/4"1.69"Round
    		3/4"Carbide Insert
    		0.193"0.201"Sandvik Coromant2769N130000002780N110000
    9/16"
    		0.562"
    		5 3/8"2.81"Round
    		3/4"Carbide Insert
    		0.193"0.201"Sandvik Coromant2769N140000002780N110000
    5/8"
    		0.625"
    		4 1/2"1.88"Round
    		3/4"Carbide Insert
    		0.193"0.201"Sandvik Coromant2769N150000002780N110000
    5/8"
    		0.625"
    		5 3/4"3.16"Round
    		3/4"Carbide Insert
    		0.193"0.201"Sandvik Coromant2769N160000002780N110000
    11/16"
    		0.687"
    		5"2.06"Round
    		1"Carbide Insert
    		0.224"0.236"Sandvik Coromant2769N170000002780N120000
    11/16"
    		0.687"
    		6 3/8"3.44"Round
    		1"Carbide Insert
    		0.224"0.236"Sandvik Coromant2769N180000002780N120000
    3/4"
    		0.75"
    		5 1/4"2 1/4"Round
    		1"Carbide Insert
    		0.224"0.236"Sandvik Coromant2769N190000002780N120000
    3/4"
    		0.75"
    		6 3/4"3 3/4"Round
    		1"Carbide Insert
    		0.224"0.236"Sandvik Coromant2769N210000002780N120000
    7/8"
    		0.875"
    		5 5/8"2.63"Round
    		1"Carbide Insert
    		0.268"0.295"Sandvik Coromant2769N220000002780N130000
    7/8"
    		0.875"
    		7 3/8"4.38"Round
    		1"Carbide Insert
    		0.268"0.295"Sandvik Coromant2769N230000002780N130000
    1"
    		1"
    		6 1/8"3"Round
    		1"Carbide Insert
    		0.331"0.350"Sandvik Coromant2769N240000002780N140000
    1"
    		1"
    		8 1/8"5"Round
    		1"Carbide Insert
    		0.331"0.350"Sandvik Coromant2769N250000002780N140000
    1 1/8"
    		1.125"
    		6 3/4"3.38"Round
    		1 1/4"Carbide Insert
    		0.331"0.350"Sandvik Coromant2769N260000002780N140000
    1 1/8"
    		1.125"
    		9"5.63"Round
    		1 1/4"Carbide Insert
    		0.331"0.350"Sandvik Coromant2769N27000000002780N140000
    1 1/4"
    		1.25"
    		7 5/8"3 3/4"Round
    		1 1/2"Carbide Insert
    		0.402"0.419"Sandvik Coromant2769N280000002780N150000
    1 1/4"
    		1.25"
    		10 1/8"6 1/4"Round
    		1 1/2"Carbide Insert
    		0.402"0.419"Sandvik Coromant2769N29000000002780N150000
    1 3/8"
    		1.375"
    		8"4.13"Round
    		1 1/2"Carbide Insert
    		0.402"0.419"Sandvik Coromant2769N310000002780N150000
    1 3/8"
    		1.375"
    		10 3/4"6.88"Round
    		1 1/2"Carbide Insert
    		0.402"0.419"Sandvik Coromant2769N32000000002780N150000
    1 1/2"
    		1.5"
    		8 1/2"4 1/2"Round
    		1 1/2"Carbide Insert
    		0.486"0.498"Sandvik Coromant2769N330000002780N150000
    1 1/2"
    		1.5"
    		11 1/2"7 1/2"Round
    		1 1/2"Carbide Insert
    		0.486"0.498"Sandvik Coromant2769N34000000002780N150000
    1 5/8"
    		1.625"
    		9"4.88"Round
    		1 1/2"Carbide Insert
    		0.486"0.498"Sandvik Coromant2769N350000002780N150000
    1 5/8"
    		1.625"
    		12 1/4"8.13"Round
    		1 1/2"Carbide Insert
    		0.486"0.498"Sandvik Coromant2769N36000000002780N150000
    1 3/4"
    		1.75"
    		9 3/8"5 1/4"Round
    		1 1/2"Carbide Insert
    		0.585"0.608"Sandvik Coromant2769N37000000002780N160000
    2"
    		2"
    		10 3/8"6"Round
    		1 1/2"Carbide Insert
    		0.585"0.608"Sandvik Coromant2769N38000000002780N160000
    2 1/4"
    		2.25"
    		11 1/4"6 3/4"Round
    		1 1/2"Carbide Insert
    		0.705"0.732"Sandvik Coromant2769N39000000002780N160000
    2 1/2"
    		2.5"
    		12 1/4"7 1/2"Round
    		1 1/2"Carbide Insert
    		0.705"0.732"Sandvik Coromant2769N41000000002780N160000
     
    Drill Bit Inserts
    Image of Product. Front orientation. Drill Bit Inserts. Inner Inserts.
    Image of Product. Front orientation. Drill Bit Inserts. Outer Inserts.

    Inner Inserts

    Outer Inserts

    Image of Attribute. Inner Inserts. Front orientation. Contains Annotated, MultipleImages. Drill Bit Inserts. Inner Inserts.
    Image of Attribute. Outer Inserts. Front orientation. Contains Annotated, MultipleImages. Drill Bit Inserts. Outer Inserts.

    Inner Inserts

    Outer Inserts

    Each
    Package
    For Drill
    Bit Size
    IC
    Dia.
    Thk.
    Hole
    Dia.
    Tip
    Radius
    For Use On
    Features
    Each
    Pkg.
    Qty.
    Pkg.
    Inner Inserts
     
    Titanium Aluminum Nitride (TiAlN)-Coated Carbide
    1/2"0.189"3/32"1/16"1/64"Aluminum, Brass, Bronze, Fiberglass, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened SteelChip Breakers2776N11000000102776N1030000000
    9/16", 5/8"0.193"3/32"1/16"1/64"Aluminum, Brass, Bronze, Fiberglass, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened SteelChip Breakers2776N1300000102776N149000000
    11/16", 3/4"0.224"3/32"1/8"1/64"Aluminum, Brass, Bronze, Fiberglass, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened SteelChip Breakers2776N1500000102776N236000000
    7/8"0.268"1/8"1/8"1/64"Aluminum, Brass, Bronze, Fiberglass, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened SteelChip Breakers2776N1700000102776N341000000
    1", 1 1/8"0.331"1/8"1/8"1/64"Aluminum, Brass, Bronze, Fiberglass, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened SteelChip Breakers2776N1900000102776N523000000
    1 1/4", 1 3/8"0.402"1/8"3/16"1/32"Aluminum, Brass, Bronze, Fiberglass, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened SteelChip Breakers2776N2200000102776N544000000
    1 1/2", 1 5/8"0.486"5/32"3/16"1/32"Aluminum, Brass, Bronze, Fiberglass, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened SteelChip Breakers2776N2400000102776N664000000
    1 3/4", 2"0.585"3/16"3/16"1/32"Aluminum, Brass, Bronze, Fiberglass, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened SteelChip Breakers2776N2600000102776N716000000
    2 1/4", 2 1/2"0.705"7/32"3/16"1/32"Aluminum, Brass, Bronze, Fiberglass, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened SteelChip Breakers2776N2800000102776N786000000
     
    Outer Inserts
     
    Titanium Nitride (TiN)-Coated Carbide
    1/2"0.189"3/32"1/16"1/64"Aluminum, Brass, Bronze, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened SteelChip Breakers2776N1200000102776N108000000
    9/16", 5/8"0.201"3/32"1/16"1/64"Aluminum, Brass, Bronze, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened SteelChip Breakers2776N1400000102776N166000000
    11/16", 3/4"0.236"3/32"1/8"1/32"Aluminum, Brass, Bronze, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened SteelChip Breakers2776N1600000102776N261000000
    7/8"0.295"1/8"1/8"1/32"Aluminum, Brass, Bronze, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened SteelChip Breakers2776N1800000102776N349000000
    1", 1 1/8"0.350"1/8"1/8"1/32"Aluminum, Brass, Bronze, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened SteelChip Breakers2776N2100000102776N531000000
    1 1/4", 1 3/8"0.419"1/8"3/16"1/32"Aluminum, Brass, Bronze, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened SteelChip Breakers2776N2300000102776N545000000
    1 1/2", 1 5/8"0.498"5/32"3/16"3/64"Aluminum, Brass, Bronze, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened SteelChip Breakers2776N2500000102776N696000000
    1 3/4", 2"0.608"3/16"3/16"3/64"Aluminum, Brass, Bronze, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened SteelChip Breakers2776N2700000102776N72000000
    2 1/4", 2 1/2"0.732"7/32"3/16"3/64"Aluminum, Brass, Bronze, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel, Hardened SteelChip Breakers2776N2900000102776N945000000
     

    Coolant-Fed Port Counterbores

    Deliver coolant to port holes as you cut to reduce heat and flush out chips. These port counterbores work in CNC machines that supply coolant through the spindle. A pilot guides the counterbore as it finishes the hole to the exact size you need for your fitting. These counterbores meet aerospace and military specifications for leakproof port holes, so fittings stay sealed over time, even during sudden pressure and vibration.
    You’ll need a step drill bit (sold separately) to rough out a hole with the right shape for your counterbore to finish. To complete your hole with threads, add a thread mill (sold separately).
    Carbide-Tipped Steel
    Image of Product. Front orientation. Counterbores. Coolant-Fed Port Counterbores.
    The hardest and most wear-resistant counterbores we offer. They stay sharp at high temperatures and fast speeds to machine port holes with ease in aluminum, steel, and other metals.
    Counterbores
    Step Drill Bits
    Thread Mills
    Shank
    Uncoated
    For Thread
    Size
    For Port
    Dash Size
    Overall
    Lg.
    Dia.
    Lg.
    Type
    No. of
    Flutes
    Pilot
    Lg.
    Mil.
    Spec.
    Mfr.
    Each
    Each
    Each
    SAE J1926/1
    7/16"-20
    		043 1/2"1/2"2"Round30.551"MS16142Everede Tool9833N1100000009851N1300000005277N260000000
    9/16"-18
    		063 1/2"1/2"2"Round30.610"MS16142Everede Tool9833N120000009851N150000005277N28000000
    3/4"-16
    		083 1/2"3/4"2"Round30.689"MS16142Everede Tool9833N130000009851N160000005277N29000000
     
    SAE AS5202
    7/16"-20
    		043 1/2"1/2"2"Round30.661"MS33649Everede Tool9833N140000009851N230000005277N26000000
    9/16"-18
    		063 1/2"1/2"2"Round30.714"MS33649Everede Tool9833N150000009851N250000005277N28000000
    3/4"-16
    		084"3/4"2"Round30.839"MS33649Everede Tool9833N160000009851N260000005277N29000000
     

    Carbide Drill Bits for Port Counterbores

    Image of Product. Side1 orientation. Drill Bits. Carbide Drill Bits for Port Counterbores.
    With multiple cutting edges, these drill bits rough out port holes to the right shape for your counterbore to finish. An internal channel delivers coolant as you cut to reduce heat and flush out chips. Use these bits with CNC machines that supply coolant through the spindle. Made of carbide, they resist wear to prepare holes that are clean and accurate over time. They’re also coated with aluminum titanium nitride (AlTiN) to further reduce heat while you cut, which extends their life. Also known as step drills.
    To finish the hole to size, you’ll need a port counterbore (sold separately). Add a thread mill (sold separately) to complete the hole with threads.
    Short Length—The most rigid bits for drilling the straightest holes.
    Drill Bits
    Port
    Counterbores
    Thread Mills
    Shank
    For Thread
    Size
    For Port
    Dash Size
    Decimal Size
    Equiv.
    Overall
    Lg., mm
    Type
    Size,
    mm
    Drill Bit Point
    Type
    Finish
    Mil.
    Spec.
    Mfr.
    Each
    Each
    Each
    Short Length
     
    SAE J1926/1
    5/16"-28
    		020.255"79Round
    		8Four Facet
    		Aluminum Titanium Nitride (AlTiN) CoatedMS16142Scientific Cutting Tools9851N1100000009869N1700000005277N240000000
    3/8"-24
    		030.317"89Round
    		10Four Facet
    		Aluminum Titanium Nitride (AlTiN) CoatedMS16142Scientific Cutting Tools9851N120000009869N180000005277N25000000
    7/16"-20
    		040.372"102Round
    		12Four Facet
    		Aluminum Titanium Nitride (AlTiN) CoatedMS16142Scientific Cutting Tools9851N130000009869N190000005277N26000000
    1/2"-20
    		050.434"107Round
    		14Four Facet
    		Aluminum Titanium Nitride (AlTiN) CoatedMS16142Scientific Cutting Tools9851N140000009869N210000005277N27000000
    9/16"-18
    		060.491"107Round
    		14Four Facet
    		Aluminum Titanium Nitride (AlTiN) CoatedMS16142Scientific Cutting Tools9851N150000009869N220000005277N28000000
    3/4"-16
    		080.672"108Round
    		20Four Facet
    		Aluminum Titanium Nitride (AlTiN) CoatedMS16142Scientific Cutting Tools9851N160000009869N230000005277N29000000
     
    SAE AS5202
    5/16"-28
    		020.26"79Round
    		8Four Facet
    		Aluminum Titanium Nitride (AlTiN) CoatedMS33649Scientific Cutting Tools9851N210000009869N280000005277N24000000
    3/8"-24
    		030.323"
    		89Round
    		10Four Facet
    		Aluminum Titanium Nitride (AlTiN) CoatedMS33649Scientific Cutting Tools9851N220000009869N290000005277N25000000
    7/16"-20
    		040.377"
    		102Round
    		12Four Facet
    		Aluminum Titanium Nitride (AlTiN) CoatedMS33649Scientific Cutting Tools9851N230000009869N310000005277N26000000
    1/2"-20
    		050.439"107Round
    		14Four Facet
    		Aluminum Titanium Nitride (AlTiN) CoatedMS33649Scientific Cutting Tools9851N240000009869N320000005277N27000000
    9/16"-18
    		060.497"107Round
    		14Four Facet
    		Aluminum Titanium Nitride (AlTiN) CoatedMS33649Scientific Cutting Tools9851N250000009869N330000005277N28000000
    3/4"-16
    		080.677"108Round
    		20Four Facet
    		Aluminum Titanium Nitride (AlTiN) CoatedMS33649Scientific Cutting Tools9851N260000009869N340000005277N29000000
     

    Port Counterbore Kits

    Image of Product. Front orientation. Contains Annotated. Counterbores. Port Counterbore Kits.
    All you need to machine precise port holes for hydraulic fittings, including a drill bit, port counterbore, and thread mill. These tools meet aerospace and military specifications for leakproof port holes, so fittings stay sealed over time, even during sudden pressure and vibration. With multiple cutting edges, the drill bit roughs out a hole with the right shape for the counterbore to finish. A built-in channel delivers coolant to the cutting surface to reduce heat and flush out chips more efficiently than a standard drill bit can. The counterbore has a pilot that guides the tool as it finishes the hole to the exact size you need for your fitting. Use the thread mill to cut internal threads. The mill leaves enough space in the hole for chips—or even a broken mill—to fall without damaging the workpiece.
    All tools are coated with aluminum titanium nitride (AlTiN) to reduce heat as you cut and extend tool life. While they’re most often used to make holes in aluminum and steel, you can also use them on hard metals like stainless steel.
    Counterbores
    Step Drill Bits
    Port
    Counterbores
    Thread Mills
    Thread
    Size
    For Port
    Dash Size
    Finish
    Includes
    Mil.
    Spec.
    Mfr.
    Each
    Each
    Each
    Each
    SAE J1926/1
    5/16"-24
    		02Aluminum Titanium Nitride (AlTiN) CoatedOne Step Drill Bit with Coolant Hole (Carbide)
    One Port Counterbore with Built-In Pilot (Carbide-Tipped Steel)
    One Thread Mill for Internal Threads (Carbide)    		MS16142Scientific Cutting Tools9855N1100000009851N1100000009910N1100000005277N240000000
    3/8"-24
    		03Aluminum Titanium Nitride (AlTiN) CoatedOne Step Drill Bit with Coolant Hole (Carbide)
    One Port Counterbore with Built-In Pilot (Carbide-Tipped Steel)
    One Thread Mill for Internal Threads (Carbide)    		MS16142Scientific Cutting Tools9855N120000009851N120000009910N120000005277N25000000
    7/16"-20
    		04Aluminum Titanium Nitride (AlTiN) CoatedOne Step Drill Bit with Coolant Hole (Carbide)
    One Port Counterbore with Built-In Pilot (Carbide-Tipped Steel)
    One Thread Mill for Internal Threads (Carbide)    		MS16142Scientific Cutting Tools9855N130000009851N130000009910N130000005277N26000000
    1/2"-20
    		05Aluminum Titanium Nitride (AlTiN) CoatedOne Step Drill Bit with Coolant Hole (Carbide)
    One Port Counterbore with Built-In Pilot (Carbide-Tipped Steel)
    One Thread Mill for Internal Threads (Carbide)    		MS16142Scientific Cutting Tools9855N140000009851N140000009910N140000005277N27000000
    9/16"-18
    		06Aluminum Titanium Nitride (AlTiN) CoatedOne Step Drill Bit with Coolant Hole (Carbide)
    One Port Counterbore with Built-In Pilot (Carbide-Tipped Steel)
    One Thread Mill for Internal Threads (Carbide)    		MS16142Scientific Cutting Tools9855N150000009851N150000009910N150000005277N28000000
    3/4"-16
    		08Aluminum Titanium Nitride (AlTiN) CoatedOne Step Drill Bit with Coolant Hole (Carbide)
    One Port Counterbore with Built-In Pilot (Carbide-Tipped Steel)
    One Thread Mill for Internal Threads (Carbide)    		MS16142Scientific Cutting Tools9855N160000009851N160000009910N160000005277N29000000
     
    SAE AS5202
    5/16"-24
    		02Aluminum Titanium Nitride (AlTiN) CoatedOne Step Drill Bit with Coolant Hole (Carbide)
    One Port Counterbore with Built-In Pilot (Carbide-Tipped Steel)
    One Thread Mill for Internal Threads (Carbide)    		MS33649Scientific Cutting Tools9855N170000009851N210000009910N170000005277N24000000
    3/8"-24
    		03Aluminum Titanium Nitride (AlTiN) CoatedOne Step Drill Bit with Coolant Hole (Carbide)
    One Port Counterbore with Built-In Pilot (Carbide-Tipped Steel)
    One Thread Mill for Internal Threads (Carbide)    		MS33649Scientific Cutting Tools9855N180000009851N220000009910N180000005277N25000000
    7/16"-20
    		04Aluminum Titanium Nitride (AlTiN) CoatedOne Step Drill Bit with Coolant Hole (Carbide)
    One Port Counterbore with Built-In Pilot (Carbide-Tipped Steel)
    One Thread Mill for Internal Threads (Carbide)    		MS33649Scientific Cutting Tools9855N190000009851N230000009910N190000005277N26000000
    1/2"-20
    		05Aluminum Titanium Nitride (AlTiN) CoatedOne Step Drill Bit with Coolant Hole (Carbide)
    One Port Counterbore with Built-In Pilot (Carbide-Tipped Steel)
    One Thread Mill for Internal Threads (Carbide)    		MS33649Scientific Cutting Tools9855N210000009851N240000009910N210000005277N27000000
    9/16"-18
    		06Aluminum Titanium Nitride (AlTiN) CoatedOne Step Drill Bit with Coolant Hole (Carbide)
    One Port Counterbore with Built-In Pilot (Carbide-Tipped Steel)
    One Thread Mill for Internal Threads (Carbide)    		MS33649Scientific Cutting Tools9855N220000009851N250000009910N220000005277N28000000
    3/4"-16
    		08Aluminum Titanium Nitride (AlTiN) CoatedOne Step Drill Bit with Coolant Hole (Carbide)
    One Port Counterbore with Built-In Pilot (Carbide-Tipped Steel)
    One Thread Mill for Internal Threads (Carbide)    		MS33649Scientific Cutting Tools9855N230000009851N260000009910N240000005277N29000000
     
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