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    358 Products

    Center Drill Type

    Center Drill Type

    For Cutting

    Center Drills

    Create precisely centered holes that mate with lathe centers or drill and countersink in a single step to install fasteners.
    High-Speed SteelAbout High-Speed Steel
    Image of Product. Front orientation. Center Drills. Center Drills.
    These versatile, wear-resistant center drills cut cleanly in most materials, including plastic, aluminum, and steel.
    60° Countersink Angle—The most common center drill angle. The short and sturdy tip starts holes that perfectly match lathe centers.
    82° Countersink Angle—Start a hole with cone-shaped recesses so inch screws sit flush with the surface.
    90° Countersink Angle—Start a hole with cone-shaped recesses so metric screws sit flush with the surface.
    Uncoated—Suitable for most tasks, but won't last as long as coated center drills.
    Titanium Nitride (TiN) Coated—Resist heat, chipping, and wear better than uncoated center drills, so they stay sharp over longer periods.
    Dia.
    Uncoated
    Titanium Nitride
    (TiN) Coated
    Trade
    Size
    Drill Bit
    Size
    Body
    Shank
    Overall
    Lg.
    No. of
    Flutes
    No. of Countersinking
    Ends
    Mfr.
    Each
    Each
    60° Countersink Angle
    000000.010"
    		1/8"1/8"1 1/4"22Keo2915A11100000029775A11000000
    00000.015"
    		1/8"1/8"1 1/4"22Keo2915A1120000029775A1200000
    0000.020"
    		1/8"1/8"1 1/4"22Keo2915A810000029775A1300000
    000.025"
    		1/8"1/8"1 1/4"22Keo2915A820000029775A1400000
    01/32"
    		1/8"1/8"1 1/4"22Keo2915A830000029775A1500000
    13/64"
    		1/8"1/8"1 1/4"22Keo2915A11000029775A1600000
    Center Drill, High-Speed Steel, 60 Degree Countersink, Trade Size 1, 1-1/4" Overall Length
    EachIn stock
    13/64"
    		1/8"1/8"3"22Keo2915A310000029775A2800000
    13/64"
    		1/8"1/8"4"22Keo2915A320000029775A2900000
    13/64"
    		1/8"1/8"5"22Keo2915A32500000———0
    13/64"
    		1/8"1/8"6"22Keo2915A3300000———0
    25/64"
    		3/16"3/16"1 7/8"22Keo2915A12000029775A1700000
    25/64"
    		3/16"3/16"3"22Keo2915A3310000029775A3100000
    25/64"
    		3/16"3/16"4"22Keo2915A340000029775A3200000
    25/64"
    		3/16"3/16"5"22Keo2915A3500000———0
    25/64"
    		3/16"3/16"6"22Keo2915A360000029775A3300000
    37/64"
    		1/4"1/4"2"22Keo2915A13000029775A1800000
    37/64"
    		1/4"1/4"3"22Keo2915A3610000029775A3400000
    37/64"
    		1/4"1/4"4"22Keo2915A370000029775A3500000
    37/64"
    		1/4"1/4"5"22Keo2915A380000029775A3600000
    37/64"
    		1/4"1/4"6"22Keo2915A390000029775A3700000
    41/8"
    		5/16"5/16"2 1/8"22Keo2915A14000029775A1900000
    41/8"
    		5/16"5/16"3"22Keo2915A3910000029775A3800000
    41/8"
    		5/16"5/16"4"22Keo2915A410000029775A3900000
    41/8"
    		5/16"5/16"5"22Keo2915A420000029775A4100000
    41/8"
    		5/16"5/16"6"22Keo2915A430000029775A4200000
    4 1/29/64"
    		3/8"3/8"2 1/2"22Keo2915A190000029775A2100000
    4 1/29/64"
    		3/8"3/8"4"22Keo2915A860000029775A4300000
    4 1/29/64"
    		3/8"3/8"5"22Keo2915A4400000———0
    4 1/29/64"
    		3/8"3/8"6"22Keo2915A870000029775A4400000
    53/16"
    		7/16"7/16"2 3/4"22Keo2915A150000029775A2200000
    53/16"
    		7/16"7/16"4"22Keo2915A880000029775A4500000
    53/16"
    		7/16"7/16"5"22Keo2915A4500000———0
    53/16"
    		7/16"7/16"6"22Keo2915A4600000———0
    67/32"
    		1/2"1/2"3"22Keo2915A160000029775A2300000
    67/32"
    		1/2"1/2"4"22Keo2915A46100000———0
    67/32"
    		1/2"1/2"5"22Keo2915A9100000———0
    67/32"
    		1/2"1/2"6"22Keo2915A4700000———0
    71/4"
    		5/8"5/8"3 1/4"22Keo2915A170000029775A2400000
    71/4"
    		5/8"5/8"6"22Keo2915A4800000———0
    85/16"
    		3/4"3/4"3 1/2"22Keo2915A180000029775A2500000
    85/16"
    		3/4"3/4"6"22Keo2915A4900000———0
    911/32"
    		7/8"7/8"3 5/8"22Keo2915A1130000029775A2600000
    103/8"
    		1"1"3 3/4"22Keo2915A1140000029775A2700000
     
    82° Countersink Angle
    000.025"
    		1/8"1/8"1 1/4"22Keo2915A14200000———0
    01/32"
    		1/8"1/8"1 1/4"22Keo2915A13700000———0
    13/64"
    		1/8"1/8"1 1/4"22Keo2915A19100000———0
    13/64"
    		1/8"1/8"3"22Keo2756A1100000———0
    13/64"
    		1/8"1/8"4"22Keo2756A1200000———0
    13/64"
    		1/8"1/8"5"22Keo2756A1300000———0
    13/64"
    		1/8"1/8"6"22Keo2756A1400000———0
    25/64"
    		3/16"3/16"1 7/8"22Keo2915A19200000———0
    25/64"
    		3/16"3/16"3"22Keo2756A1500000———0
    25/64"
    		3/16"3/16"4"22Keo2756A1600000———0
    25/64"
    		3/16"3/16"5"22Keo2756A1700000———0
    25/64"
    		3/16"3/16"6"22Keo2756A1800000———0
    37/64"
    		1/4"1/4"2"22Keo2915A19300000———0
    37/64"
    		1/4"1/4"3"22Keo2756A1900000———0
    37/64"
    		1/4"1/4"4"22Keo2756A2100000———0
    37/64"
    		1/4"1/4"5"22Keo2756A2200000———0
    37/64"
    		1/4"1/4"6"22Keo2756A2300000———0
    41/8"
    		5/16"5/16"2 1/8"22Keo2915A19400000———0
    41/8"
    		5/16"5/16"3"22Keo2756A2400000———0
    41/8"
    		5/16"5/16"4"22Keo2756A2500000———0
    41/8"
    		5/16"5/16"5"22Keo2756A2600000———0
    41/8"
    		5/16"5/16"6"22Keo2756A2700000———0
    4 1/29/64"
    		3/8"3/8"2 1/2"22Keo2915A15600000———0
    4 1/29/64"
    		3/8"3/8"4"22Keo2756A2800000———0
    4 1/29/64"
    		3/8"3/8"5"22Keo2756A2900000———0
    4 1/29/64"
    		3/8"3/8"6"22Keo2756A3100000———0
    53/16"
    		7/16"7/16"2 3/4"22Keo2915A19500000———0
    53/16"
    		7/16"7/16"4"22Keo2756A3200000———0
    53/16"
    		7/16"7/16"5"22Keo2756A3300000———0
    53/16"
    		7/16"7/16"6"22Keo2756A3400000———0
    67/32"
    		1/2"1/2"3"22Keo2915A19600000———0
    67/32"
    		1/2"1/2"4"22Keo2756A3500000———0
    67/32"
    		1/2"1/2"5"22Keo2756A3600000———0
    67/32"
    		1/2"1/2"6"22Keo2756A3700000———0
    71/4"
    		5/8"5/8"3 1/4"22Keo2915A19700000———0
    71/4"
    		5/8"5/8"6"22Keo2756A38000000———0
    85/16"
    		3/4"3/4"3 1/2"22Keo2915A19800000———0
    85/16"
    		3/4"3/4"6"22Keo2756A39000000———0
    911/32"
    		7/8"7/8"3 5/8"22Keo2915A162000000———0
    103/8"
    		1"1"3 3/4"22Keo2915A165000000———0
     
    90° Countersink Angle
    000000.010"
    		1/8"1/8"1 1/4"22Keo2915A13200000———0
    00000.015"
    		1/8"1/8"1 1/4"22Keo2915A13300000———0
    0000.020"
    		1/8"1/8"1 1/4"22Keo2915A13400000———0
    000.025"
    		1/8"1/8"1 1/4"22Keo2915A14300000———0
    01/32"
    		1/8"1/8"1 1/4"22Keo2915A13800000———0
    13/64"
    		1/8"1/8"1 1/4"22Keo2915A2100000———0
    13/64"
    		1/8"1/8"3"22Keo2756A4100000———0
    13/64"
    		1/8"1/8"4"22Keo2756A4200000———0
    13/64"
    		1/8"1/8"5"22Keo2756A4300000———0
    13/64"
    		1/8"1/8"6"22Keo2756A4400000———0
    25/64"
    		3/16"3/16"1 7/8"22Keo2915A2200000———0
    25/64"
    		3/16"3/16"3"22Keo2756A4500000———0
    25/64"
    		3/16"3/16"4"22Keo2756A4600000———0
    25/64"
    		3/16"3/16"5"22Keo2756A4700000———0
    25/64"
    		3/16"3/16"6"22Keo2756A4800000———0
    37/64"
    		1/4"1/4"2"22Keo2915A2300000———0
    37/64"
    		1/4"1/4"3"22Keo2756A4900000———0
    37/64"
    		1/4"1/4"4"22Keo2756A5100000———0
    37/64"
    		1/4"1/4"5"22Keo2756A5200000———0
    37/64"
    		1/4"1/4"6"22Keo2756A5300000———0
    41/8"
    		5/16"5/16"2 1/8"22Keo2915A2400000———0
    41/8"
    		5/16"5/16"3"22Keo2756A5400000———0
    41/8"
    		5/16"5/16"4"22Keo2756A5500000———0
    41/8"
    		5/16"5/16"5"22Keo2756A5600000———0
    41/8"
    		5/16"5/16"6"22Keo2756A5700000———0
    4 1/29/64"
    		3/8"3/8"2 1/2"22Keo2915A2500000———0
    4 1/29/64"
    		3/8"3/8"4"22Keo2756A5800000———0
    4 1/29/64"
    		3/8"3/8"5"22Keo2756A5900000———0
    4 1/29/64"
    		3/8"3/8"6"22Keo2756A6100000———0
    53/16"
    		7/16"7/16"2 3/4"22Keo2915A2600000———0
    53/16"
    		7/16"7/16"4"22Keo2756A6200000———0
    53/16"
    		7/16"7/16"5"22Keo2756A6300000———0
    53/16"
    		7/16"7/16"6"22Keo2756A6400000———0
    67/32"
    		1/2"1/2"3"22Keo2915A2700000———0
    67/32"
    		1/2"1/2"4"22Keo2756A6500000———0
    67/32"
    		1/2"1/2"5"22Keo2756A6600000———0
    67/32"
    		1/2"1/2"6"22Keo2756A6700000———0
    71/4"
    		5/8"5/8"3 1/4"22Keo2915A2800000———0
    71/4"
    		5/8"5/8"6"22Keo2756A68000000———0
    85/16"
    		3/4"3/4"3 1/2"22Keo2915A2900000———0
    85/16"
    		3/4"3/4"6"22Keo2756A69000000———0
    911/32"
    		7/8"7/8"3 5/8"22Keo2915A163000000———0
    103/8"
    		1"1"3 3/4"22Keo2915A166000000———0
     
    Cobalt SteelAbout Cobalt Steel
    Image of Product. Front orientation. Center Drills. Center Drills.
    Tough and wear resistant, these center drills last at least twice as long as high-speed steel. They can also run up to 25% faster at higher temperatures without chipping on hard materials, such as nickel.
    60° Countersink Angle—The most common center drill angle. The short and sturdy tip starts holes that perfectly match lathe centers.
    Uncoated—Suitable for most tasks, but won't last as long as coated center drills.
    Dia.
    Uncoated
    Trade
    Size
    Drill Bit
    Size
    Body
    Shank
    Overall
    Lg.
    No. of
    Flutes
    No. of Countersinking
    Ends
    Mfr.
    Each
    60° Countersink Angle
    000.025"
    		1/8"1/8"1 1/8"21Dormer Pramet2915A117000000
    01/32"
    		1/8"1/8"1 1/8"21Dormer Pramet2915A11800000
    13/64"
    		1/8"1/8"1 1/4"22Dormer Pramet2915A5100000
    13/64"
    		1/8"1/8"3"22Keo2728A1100000
    13/64"
    		1/8"1/8"4"22Keo2728A1200000
    13/64"
    		1/8"1/8"5"22Keo2728A1300000
    13/64"
    		1/8"1/8"6"22Keo2728A1400000
    25/64"
    		3/16"3/16"1 7/8"22Dormer Pramet2915A520000
    25/64"
    		3/16"3/16"3"22Keo2728A1500000
    25/64"
    		3/16"3/16"4"22Keo2728A1600000
    25/64"
    		3/16"3/16"5"22Keo2728A1700000
    25/64"
    		3/16"3/16"6"22Keo2728A1800000
    37/64"
    		1/4"1/4"2"22Dormer Pramet2915A5300000
    37/64"
    		1/4"1/4"3"22Keo2728A1900000
    37/64"
    		1/4"1/4"4"22Keo2728A2100000
    37/64"
    		1/4"1/4"5"22Keo2728A2200000
    37/64"
    		1/4"1/4"6"22Keo2728A2300000
    41/8"
    		5/16"5/16"2 1/8"22Dormer Pramet2915A5400000
    41/8"
    		5/16"5/16"3"22Keo2728A2400000
    41/8"
    		5/16"5/16"4"22Keo2728A2500000
    41/8"
    		5/16"5/16"5"22Keo2728A2600000
    41/8"
    		5/16"5/16"6"22Keo2728A2700000
    4 1/29/64"
    		3/8"3/8"2 1/2"22Keo2915A5500000
    4 1/29/64"
    		3/8"3/8"4"22Keo2728A2800000
    4 1/29/64"
    		3/8"3/8"5"22Keo2728A2900000
    4 1/29/64"
    		3/8"3/8"6"22Keo2728A3100000
    53/16"
    		7/16"7/16"2 3/4"22Dormer Pramet2915A5600000
    53/16"
    		7/16"7/16"4"22Keo2728A3200000
    53/16"
    		7/16"7/16"5"22Keo2728A3300000
    53/16"
    		7/16"7/16"6"22Keo2728A34000000
    67/32"
    		1/2"1/2"3"22Dormer Pramet2915A5700000
    67/32"
    		1/2"1/2"4"22Keo2728A3500000
    67/32"
    		1/2"1/2"5"22Keo2728A3600000
    67/32"
    		1/2"1/2"6"22Keo2728A37000000
    71/4"
    		5/8"5/8"3 1/4"22Dormer Pramet2915A5800000
    71/4"
    		5/8"5/8"6"22Keo2728A38000000
    85/16"
    		3/4"3/4"3 1/2"22Dormer Pramet2915A5900000
    85/16"
    		3/4"3/4"6"22Keo2728A39000000
     
    Carbide
    Image of Product. Front orientation. Center Drills. Center Drills.
    The hardest and most wear-resistant center drills you can buy. They stay sharp at high temperatures and faster speeds for the best performance on hard and difficult-to-machine materials. They last 10 to 20 times longer than their closest alternative, cobalt steel. Carbide can be brittle, however, so use a rigid machine tool holder to prevent breakage.
    60° Countersink Angle—The most common center drill angle. The short and sturdy tip starts holes that perfectly match lathe centers.
    82° Countersink Angle—Start a hole with cone-shaped recesses so inch screws sit flush with the surface.
    90° Countersink Angle—Start a hole with cone-shaped recesses so metric screws sit flush with the surface.
    Uncoated—Suitable for most tasks, but won't last as long as coated center drills.
    Titanium Carbon Nitride (TiCN) Coated—Resist heat, chipping, and wear, to last up to three times longer than an uncoated option.
    Titanium Aluminum Nitride (TiAlN) Coated—Harder than TiCN, these center drills cut metal as hard as Rockwell C50, such as iron and titanium, without chipping.
    Aluminum Titanium Nitride (AlTiN) Coated—The hardest and most wear-resistant coating we offer, these center drills cut through metals as hard as Rockwell C70 without losing their sharp cutting edges.
    Dia.
    Uncoated
    Titanium Carbon
    Nitride (TiCN) Coated
    Titanium Aluminum
    Nitride (TiAlN) Coated
    Aluminum Titanium
    Nitride (AlTiN) Coated
    Trade
    Size
    Drill Bit
    Size
    Body
    Shank
    Overall
    Lg.
    No. of
    Flutes
    No. of Countersinking
    Ends
    Mfr.
    Each
    Each
    Each
    Each
    60° Countersink Angle
    000.025"
    		1/8"1/8"1 1/2"22Ultra Tool2925A170000002936A1110000002936A1140000002936A221000000
    01/32"
    		1/8"1/8"1 1/2"22Ultra Tool2925A18000002936A121000002936A124000002936A22400000
    13/64"
    		1/8"1/8"1 1/2"22Ultra Tool2925A11000002936A131000002936A134000002936A22700000
    25/64"
    		3/16"3/16"2"22Ultra Tool2925A12000002936A141000002936A144000002936A23100000
    37/64"
    		1/4"1/4"2"22Ultra Tool2925A13000002936A151000002936A154000002936A23400000
    41/8"
    		5/16"5/16"2 1/2"22Ultra Tool2925A14000002936A161000002936A164000002936A23700000
    53/16"
    		7/16"7/16"2 3/4"22Ultra Tool2925A15000002936A1710000002936A1740000002936A241000000
    67/32"
    		1/2"1/2"3"22Ultra Tool2925A160000002936A1810000002936A1840000002936A244000000
    71/4"
    		5/8"5/8"3 1/2"22Ultra Tool2925A190000002936A1910000002936A1940000002936A247000000
    85/16"
    		3/4"3/4"4"22Ultra Tool2925A210000002936A2110000002936A2140000002936A251000000
     
    82° Countersink Angle
    000.025"
    		1/8"1/8"1 1/2"22Ultra Tool2925A23000002936A112000002936A115000002936A22200000
    01/32"
    		1/8"1/8"1 1/2"22Ultra Tool2925A24000002936A122000002936A125000002936A22500000
    13/64"
    		1/8"1/8"1 1/2"22Ultra Tool2925A25000002936A132000002936A135000002936A22800000
    25/64"
    		3/16"3/16"2"22Ultra Tool2925A26000002936A142000002936A145000002936A23200000
    37/64"
    		1/4"1/4"2"22Ultra Tool2925A27000002936A152000002936A155000002936A23500000
    41/8"
    		5/16"5/16"2 1/2"22Ultra Tool2925A28000002936A162000002936A165000002936A23800000
    53/16"
    		7/16"7/16"2 3/4"22Ultra Tool2925A29000002936A1720000002936A1750000002936A242000000
    67/32"
    		1/2"1/2"3"22Ultra Tool2925A310000002936A1820000002936A1850000002936A245000000
    71/4"
    		5/8"5/8"3 1/2"22Ultra Tool2925A320000002936A1920000002936A1950000002936A248000000
    85/16"
    		3/4"3/4"4"22Ultra Tool2925A330000002936A2120000002936A2150000002936A252000000
     
    90° Countersink Angle
    000.025"
    		1/8"1/8"1 1/2"22Ultra Tool2925A34000002936A113000002936A116000002936A22300000
    01/32"
    		1/8"1/8"1 1/2"22Ultra Tool2925A35000002936A123000002936A126000002936A22600000
    13/64"
    		1/8"1/8"1 1/2"22Ultra Tool2925A36000002936A133000002936A136000002936A22900000
    25/64"
    		3/16"3/16"2"22Ultra Tool2925A37000002936A143000002936A146000002936A23300000
    37/64"
    		1/4"1/4"2"22Ultra Tool2925A38000002936A153000002936A156000002936A23600000
    41/8"
    		5/16"5/16"2 1/2"22Ultra Tool2925A39000002936A163000002936A166000002936A23900000
    53/16"
    		7/16"7/16"2 3/4"22Ultra Tool2925A41000002936A1730000002936A1760000002936A243000000
    67/32"
    		1/2"1/2"3"22Ultra Tool2925A420000002936A1830000002936A1860000002936A246000000
    71/4"
    		5/8"5/8"3 1/2"22Ultra Tool2925A430000002936A1930000002936A1960000002936A249000000
    85/16"
    		3/4"3/4"4"22Ultra Tool2925A440000002936A2130000002936A2160000002936A253000000
     

    Center Drill Sets

    Image of Product. Front orientation. Center Drills. Center Drill Sets.
    A variety of sizes to create precisely centered holes that mate with lathe centers or to drill and countersink in a single step to install fasteners.
    High-Speed Steel—These versatile, wear-resistant center drills cut cleanly in most materials, including plastic, aluminum, and steel.
    Cobalt Steel—Tough and wear resistant, these center drills last at least twice as long as high-speed steel. They can also run up to 25% faster at higher temperatures without chipping on hard materials, such as nickel.
    Carbide—The hardest and most wear-resistant center drills you can buy. They stay sharp at high temperatures and faster speeds for the best performance on hard and difficult-to-machine materials. They last 10 to 20 times longer than their closest alternative, cobalt steel. Carbide can be brittle, however, so use a rigid machine tool holder to prevent breakage.
    60° Countersink Angle—The most common center drill angle. The short and sturdy tip starts holes that perfectly match lathe centers.
    82° Countersink Angle—Start a hole with cone-shaped recesses so inch screws sit flush with the surface.
    90° Countersink Angle—Start a hole with cone-shaped recesses so metric screws sit flush with the surface.
    Uncoated—Suitable for most tasks, but won't last as long as coated center drills.
    Titanium Carbon Nitride (TiCN) Coated—Resist heat, chipping, and wear, to last up to three times longer than an uncoated option.
    Titanium Aluminum Nitride (TiAlN) Coated—Harder than TiCN, these center drills cut metal as hard as Rockwell C50, such as iron and titanium, without chipping.
    Aluminum Titanium Nitride (AlTiN) Coated—The hardest and most wear-resistant coating we offer, these center drills cut through metals as hard as Rockwell C70 without losing their sharp cutting edges.
    60°
    Countersink Angle
    82°
    Countersink Angle
    90°
    Countersink Angle
    No. of
    Pieces
    Trade Size
    Finish
    Container
    Type
    Mfr.
    Each
    Each
    Each
    High-Speed Steel
    500000, 0000, 000, 00, 0UncoatedPlastic CaseKeo2917A4000000———0———0
    51, 2, 3, 4, 5UncoatedPlastic CaseDormer Pramet———02917A20000002917A3000000
    51, 2, 3, 4, 5UncoatedPlastic CaseKeo2917A100000———0———0
     
    Cobalt Steel
    51, 2, 3, 4, 5UncoatedPlastic CaseDormer Pramet2917A500000———0———0
     
    Carbide
    61, 2, 3, 4, 5, 6UncoatedMetal CaseUltra Tool2925A220000002925A720000002925A73000000
    61, 2, 3, 4, 5, 6Titanium Carbon Nitride (TiCN) CoatedMetal CaseUltra Tool2936A3110000002936A3210000002936A331000000
    61, 2, 3, 4, 5, 6Titanium Aluminum Nitride (TiAlN) CoatedMetal CaseUltra Tool2936A3120000002936A3220000002936A332000000
    61, 2, 3, 4, 5, 6Aluminum Titanium Nitride (AlTiN) CoatedMetal CaseUltra Tool2936A3130000002936A3230000002936A333000000
     

    Bell-Style Center Drills

    Drill a 60° angled hole while the bell shape bevels the outer edge to form an additional 120° chamfer. The chamfered edge is more gradual and softer than edges created by a standard center drill, so it protects the hole from damage. This added protection is particularly useful when a part will undergo several machining processes or be machined on multiple sides using a live center.
    High-Speed SteelAbout High-Speed Steel
    Image of Product. Front orientation. Center Drills. Bell-Style Center Drills.
    These versatile, wear-resistant center drills cut cleanly in most materials, including plastic, aluminum, and steel.
    60° Countersink Angle—The most common center drill angle. The short and sturdy tip starts holes that perfectly match lathe centers.
    Uncoated—Suitable for most tasks, but won't last as long as coated center drills.
    Dia.
    Uncoated
    Trade
    Size
    Drill Bit
    Size
    Body
    Shank
    Overall
    Lg.
    No. of
    Flutes
    No. of Countersinking
    Ends
    Mfr.
    Each
    60° Countersink Angle
    113/64"
    		1/8"1/8"1 1/4"22Keo2915A7100000
    121/16"
    		3/16"3/16"1 7/8"22Keo2915A720000
    133/32"
    		1/4"1/4"2"22Keo2915A730000
    147/64"
    		5/16"5/16"2 1/8"22Keo2915A740000
    155/32"
    		7/16"7/16"2 3/4"22Keo2915A7500000
    163/16"
    		1/2"1/2"3"22Keo2915A7600000
    177/32"
    		5/8"5/8"3 1/4"22Keo2915A7700000
    181/4"
    		3/4"3/4"3 1/2"22Keo2915A7800000
    195/16"
    		7/8"7/8"3 5/8"22Keo2915A11900000
    203/8"
    		1"1"3 3/4"22Keo2915A12100000
     

    Radius-Style Center Drills

    Drill a hole that smoothly rounds into its countersunk portion to set up the most precise machining jobs. The curved shape of the hole minimizes contact between your material and lathe center. With fewer touch points, there's fewer opportunities to knock the lathe center off track.
    High-Speed SteelAbout High-Speed Steel
    Image of Product. Front orientation. Center Drills. Radius-Style Center Drills.
    These versatile, wear-resistant center drills cut cleanly in most materials, including plastic, aluminum, and steel.
    60° Countersink Angle—The most common center drill angle. The short and sturdy tip starts holes that perfectly match lathe centers.
    Uncoated—Suitable for most tasks, but won't last as long as coated center drills.
    Dia.
    Uncoated
    Trade
    Size
    Drill Bit
    Size
    Body
    Shank
    Overall
    Lg.
    No. of
    Flutes
    No. of Countersinking
    Ends
    Mfr.
    Each
    60° Countersink Angle
    000000.010"
    		1/8"1/8"1 1/4"22Keo27435A15000000
    00000.015"
    		1/8"1/8"1 1/4"22Keo27435A1600000
    0000.020"
    		1/8"1/8"1 1/4"22Keo27435A1700000
    000.025"
    		1/8"1/8"1 1/4"22Keo27435A1800000
    01/32"
    		1/8"1/8"1 1/4"22Keo27435A1900000
    13/64"
    		1/8"1/8"1 1/4"22Keo27435A210000
    25/64"
    		3/16"3/16"1 7/8"22Keo27435A220000
    37/64"
    		1/4"1/4"2"22Keo27435A2300000
    41/8"
    		5/16"5/16"2 1/8"22Keo27435A2400000
    4 1/29/64"
    		3/8"3/8"2 1/2"22Keo27435A3200000
    53/16"
    		7/16"7/16"2 3/4"22Keo27435A2500000
    67/32"
    		1/2"1/2"3"22Keo27435A2600000
    71/4"
    		5/8"5/8"3 1/4"22Keo27435A2700000
    85/16"
    		3/4"3/4"3 1/2"22Keo27435A2800000
    103/8"
    		1"1"3 3/4"22Keo27435A31000000
     
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