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    1 Product

    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 Fastener Threads
    Image of Product. Spiral Flute. Front orientation. Drill Bits. Tapping Drill Bits, For Cutting Fastener Threads, Spiral Flute.

    Spiral Flute

    Cut threads into holes so screws, bolts, and rods fit snugly. 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
    Thread
    Size
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    Drill Bit
    Size
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    Flute
    Type
    No. of
    Flutes
    Thread
    Type
    Pitch Dia.
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    Each
    Uncoated
    4-48
    		3/8"42 Ga.1 7/8"Spiral2UNF
    		H2Square0000000000000
    High-Speed Steel Combination Drill Bit/Tap 4-48 Thread Size
    Product Detail
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