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    41 Products
    About Countersinks
    industrial info icon

    Choose the right countersink angle, body diameter, and number of flutes for your application.

    Two-Piece Long-Reach Countersinks for Screws

    Create a custom-length countersink for access to hard-to-reach holes. These tools are used in angle drills and hand drivers for countersinking and deburring. For maximum stability, choose the shortest extension that works for your application.
    High-Speed Steel
    Image of Product. Front orientation. Countersinks. Two-Piece Long-Reach Countersinks for Screws, 2 Flutes.
    Image of Product. Front orientation. Countersink Extensions.

    2 Flutes

    Countersink Extensions

    These versatile, wear-resistant countersinks cut cleanly in most materials, including plastic, aluminum, and steel.
    Manufacturer—We source from trusted manufacturers who vet raw materials for purity and use diamond grinding wheels to machine precise edges. This keeps cutting surfaces smooth and free of microscopic burrs. Because our suppliers clean their wheels more often than other manufacturers, each countersink is consistently ground to create uniform holes every time.
    Countersinks
    4" Overall Length
    Countersink Extensions
    6" Overall Length
    Countersink Extensions
    12" Overall Length
    Countersink Extensions
    Dia.
    Uncoated
    Body
    Shank
    Overall
    Lg.
    Shank
    Type
    Mfr.
    Each
    Each
    Each
    Each
    2 Flutes
     
    82° Countersink Angle
    3/8"1/4"3/4"ThreadedCraig Tools3109A210000003109A710000003109A720000003109A73000000
    1/2"1/4"3/4"ThreadedCraig Tools3109A22000003109A71000003109A72000003109A7300000
     
    90° Countersink Angle
    3/8"1/4"3/4"ThreadedCraig Tools3109A31000003109A71000003109A72000003109A7300000
    1/2"1/4"3/4"ThreadedCraig Tools3109A3200000———0———0———0
     

    Two-Piece Long-Reach Countersinks for Rivets

    Create a custom-length countersink for access to hard-to-reach holes. These tools are used in angle drills and hand drivers for countersinking and deburring. For maximum stability, choose the shortest extension that works for your application.
    High-Speed Steel
    Image of Product. Front orientation. Countersinks. Two-Piece Long-Reach Countersinks for Rivets, 2 Flutes.
    Image of Product. Front orientation. Countersink Extensions.

    2 Flutes

    Countersink Extensions

    These versatile, wear-resistant countersinks cut cleanly in most materials, including plastic, aluminum, and steel.
    Manufacturer—We source from trusted manufacturers who vet raw materials for purity and use diamond grinding wheels to machine precise edges. This keeps cutting surfaces smooth and free of microscopic burrs. Because our suppliers clean their wheels more often than other manufacturers, each countersink is consistently ground to create uniform holes every time.
    Countersinks
    4" Overall Length
    Countersink Extensions
    6" Overall Length
    Countersink Extensions
    12" Overall Length
    Countersink Extensions
    Dia.
    Uncoated
    Body
    Shank
    Overall
    Lg.
    Shank
    Type
    Mfr.
    Each
    Each
    Each
    Each
    2 Flutes
     
    100° Countersink Angle
    3/8"1/4"3/4"ThreadedCraig Tools3109A410000003109A710000003109A720000003109A73000000
    1/2"1/4"3/4"ThreadedCraig Tools3109A42000003109A71000003109A72000003109A7300000
     

    Reverse Countersinks for Screws

    If an obstruction blocks access for standard countersinks, these tools enter from the reverse side instead. They're often used to add countersunk holes to surfaces in preassembled parts. Put the shank (sold separately) in your drill chuck and insert it all the way through the hole. Then reach into the confined space to stick the countersink head onto the shank. Pull back on the drill to countersink the hole.
    High-Speed Steel
    Image of ProductInUse. Front orientation. Countersinks. Reverse Countersinks for Screws, 3 Flutes.

    3 Flutes

    Image of ProductInUse. Front orientation. Contains Annotated, Border. Countersinks. Reverse Countersinks for Screws, 3 Flutes.

    3 Flutes

    These versatile, wear-resistant countersinks cut cleanly in most materials, including plastic, aluminum, and steel.
    Manufacturer—We source from trusted manufacturers who vet raw materials for purity and use diamond grinding wheels to machine precise edges. This keeps cutting surfaces smooth and free of microscopic burrs. Because our suppliers clean their wheels more often than other manufacturers, each countersink is consistently ground to create uniform holes every time.
    Countersinks
    Required Shanks
    Uncoated
    Body
    Dia.
    For Hole
    Dia.
    Overall
    Lg.
    Mfr.
    Each
    Shank
    Dia.
    Overall
    Lg.
    Each
    3 Flutes
     
    82° Countersink Angle
    5/16"3/32"1/2"Craig Tools3309A410000003/32"6"3309A3100000
    5/16"1/8"1/2"Craig Tools3309A42000001/8"6"3309A320000
    5/16"5/32"1/2"Craig Tools3309A43000005/32"6"3309A330000
    3/8"1/8"1/2"Craig Tools3309A44000001/8"6"3309A320000
    3/8"5/32"1/2"Craig Tools3309A45000005/32"6"3309A330000
    3/8"3/16"1/2"Craig Tools3309A46000003/16"6"3309A3400000
    1/2"5/32"1/2"Craig Tools3309A47000005/32"6"3309A330000
    1/2"3/16"1/2"Craig Tools3309A48000003/16"6"3309A3400000
    1/2"1/4"1/2"Craig Tools3309A49000001/4"6"3309A3500000
     

    Reverse Countersinks for Rivets

    If an obstruction blocks access for standard countersinks, these tools enter from the reverse side instead. They're often used to add countersunk holes to surfaces in preassembled parts. Put the shank (sold separately) in your drill chuck and insert it all the way through the hole. Then reach into the confined space to stick the countersink head onto the shank. Pull back on the drill to countersink the hole.
    High-Speed Steel
    Image of ProductInUse. Front orientation. Countersinks. Reverse Countersinks for Rivets, 3 Flutes.

    3 Flutes

    Image of ProductInUse. Front orientation. Contains Annotated, Border. Countersinks. Reverse Countersinks for Rivets, 3 Flutes.

    3 Flutes

    These versatile, wear-resistant countersinks cut cleanly in most materials, including plastic, aluminum, and steel.
    Manufacturer—We source from trusted manufacturers who vet raw materials for purity and use diamond grinding wheels to machine precise edges. This keeps cutting surfaces smooth and free of microscopic burrs. Because our suppliers clean their wheels more often than other manufacturers, each countersink is consistently ground to create uniform holes every time.
    Countersinks
    Required Shanks
    Uncoated
    Body
    Dia.
    For Hole
    Dia.
    Overall
    Lg.
    Mfr.
    Each
    Shank
    Dia.
    Overall
    Lg.
    Each
    3 Flutes
     
    100° Countersink Angle
    5/16"3/32"1/2"Craig Tools3309A110000003/32"6"3309A3100000
    5/16"1/8"1/2"Craig Tools3309A12000001/8"6"3309A320000
    5/16"5/32"1/2"Craig Tools3309A13000005/32"6"3309A330000
    3/8"1/8"1/2"Craig Tools3309A14000001/8"6"3309A320000
    3/8"5/32"1/2"Craig Tools3309A15000005/32"6"3309A330000
    3/8"3/16"1/2"Craig Tools3309A16000003/16"6"3309A3400000
    1/2"5/32"1/2"Craig Tools3309A17000005/32"6"3309A330000
    1/2"3/16"1/2"Craig Tools3309A18000003/16"6"3309A3400000
    1/2"1/4"1/2"Craig Tools3309A19000001/4"6"3309A3500000
     

    Reverse Counterbores

    If the hole is obstructed, these counterbores drill from the reverse side instead. They're handy for adding counterbores to existing installations.
    After drilling your through hole, put the shank (sold separately) in your drill chuck and insert it all the way through. Then reach into the confined space to stick the counterbore head onto the shank. Pull back on the drill to counterbore the hole.
    High-Speed Steel
    Image of ProductInUse. Front orientation. Contains Annotated, Border. Counterbores. Reverse Counterbores.
    Image of Product. Counterbore Head. Front orientation. Contains Annotated. Counterbores. Reverse Counterbores.

    Counterbore Head

    Durable and wear resistant, these counterbores make accurate cuts in most materials without chipping or cracking.
    Counterbores
    Required Shanks
    Uncoated
    Body
    Dia.
    Overall
    Lg.
    No. of
    Flutes
    Mfr.
    Each
    Shank
    Dia.
    Overall
    Lg.
    Each
    5/16"1/2"4Craig Tools3323A210000003/32"6"3309A3100000
    5/16"1/2"4Craig Tools3323A22000001/8"6"3309A320000
    5/16"1/2"4Craig Tools3323A23000005/32"6"3309A330000
    3/8"1/2"4Craig Tools3323A24000001/8"6"3309A320000
    3/8"1/2"4Craig Tools3323A25000005/32"6"3309A330000
    3/8"1/2"4Craig Tools3323A26000003/16"6"3309A3400000
    1/2"1/2"4Craig Tools3323A27000005/32"6"3309A330000
    1/2"1/2"4Craig Tools3323A28000003/16"6"3309A3400000
    1/2"1/2"4Craig Tools3323A29000001/4"6"3309A3500000
     
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