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    6 Products

    Tapping Drill Bits

    Drill and thread holes with the same bit. The tap section has a plug chamfer with 3-5 chamfered threads for through holes and blind holes.
    High-Speed Steel—For Pipe and Conduit Threads
    Image of Product. Front orientation. Drill Bits. Tapping Drill Bits, For Cutting Pipe Threads, For Cutting Conduit Threads, Spiral Flute.

    Spiral Flute

    Add internal threads to pipe and conduit when installing new runs or expanding an existing system. Wear and heat resistant, these bits are versatile for use on a range of materials.
    Uncoated—The most economical option, uncoated bits perform best when used on low-carbon steel and aluminum. Polished to reduce friction, they're also known as bright finish bits.
    Spiral Flute—Pull chips out of the hole to prevent buildup when tapping.
    Square Shank—Use in a tap holder for drill presses and milling machines.
    Plug Chamfer
    Pipe
    Size
    Thread
    Lg.
    Drill Bit
    Size
    Overall
    Lg.
    Flute
    Type
    No. of
    Flutes
    Thread
    Type
    Shank
    Type
    Each
    Uncoated
    1/8
    		3/4"Q2 7/8"Spiral4NPTF
    		Square00000000000000
    1/4
    		1 1/16"7/16"3 5/16"Spiral4NPTF
    		Square0000000000000
    3/8
    		1 1/16"9/16"3 1/2"Spiral4NPTF
    		Square0000000000000
    1/2
    		1 3/8"45/64"4 3/8"Spiral4NPTF
    		Square0000000000000
    3/4
    		1 3/8"29/32"4 9/16"Spiral6NPTF
    		Square0000000000000
    1
    		1 3/4"1 9/64"5 3/8"Spiral6NPTF
    		Square0000000000000
     
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