McMaster-Carr logo
    Forward
    Enter e-mail addresses in the fields below
    Message
    Cancel
    Print
    How can we improve?
    Comments
    E-mail address (if you would like a response)
    5 Products

    Tri-Groove Bits

    Image of Product. Front orientation. Screwdriver Bits. Tri-Groove Bits.
    Turn tri-groove screws with these bits. They're commonly used to fasten signs, lighting fixtures, and other types of public property.
    Quick-Change Hex Shank—Lock these bits directly into power tools. They won't wobble as much as bits paired with an adapter, so they are the best choice for high-precision tasks.
    Steel—Best for dry environments, since moisture will cause these bits to rust.
    Overall
    For Screw Size
    Lg.
    Dia.
    Material
    Each
    For Power Tools
     
    1/4" Quick-Change Hex Shank Size
    No. 1, No. 2, No. 3, No. 4
    		1 3/8"3/8"Steel0000000000000
    No. 5, No. 6, No. 7, No. 8, No. 9, No. 10, No. 11
    		1 1/4"1/2"Steel000000000000
    No. 8, No. 9, No. 10, No. 11, No. 12, 1/4"
    		1 1/4"7/8"Steel000000000000
    No. 12, 5/16"
    		1 1/4"3/4"Steel000000000000
     

    Tri-Groove Bit Sets

    Image of Product. Front orientation. Screwdriver Bits. Tri-Groove Bit Sets.
    The bits in these sets turn tri-groove screws. They're commonly used to fasten signs, lighting fixtures, and other types of public property.
    Quick-Change Hex Shank—Lock these bits directly into power tools. They won't wobble as much as bits paired with an adapter, so they are the best choice for high-precision tasks.
    High-Speed Steel—Harder and more heat resistant than plain steel. These bits withstand the intense friction of high-speed power tools without deforming or softening.
    Components
    Included
    Bits Included
    Material
    Container
    Type
    Each
    For Power Tools
     
    1/4" Quick-Change Hex Shank Size
    4 BitsTri-Groove: 0.375" O'all Dia. for No. 1-No. 8 (1 3/8" O'all Lg.)
    Tri-Groove: 0.5" O'all Dia. for No. 5-No. 11 (1 1/4" O'all Lg.)
    Tri-Groove: 0.75" O'all Dia. for No. 12-No. 13, 5/16" (1 1/4" O'all Lg.)
    Tri-Groove: 0.875" O'all Dia. for No. 8-No. 12, 1/4" (1 1/4" O'all Lg.)    		High-Speed SteelPlastic Pouch0000000000000
     
    back to top