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    18 Products

    Tri-Groove Sockets

    Grip the indentations around the outside of tri-groove fasteners. These sockets are for hand-driven use only.
    Black-Oxide Steel
    Image of Product. Square Drive. Front orientation. Black-Oxide Steel. Tri-Groove Sockets.
    Image of Product. Front orientation. Sockets. Tri-Groove Sockets, Black-Oxide Steel, 1" Hex Drive Size, Standard Clearance.
    Image of Specification. Front orientation. Tri-Groove Socket.

    Square

    Drive

    1" Hex Drive

    Size, Standard

    Clearance

    Tri-Groove

    Socket

    Hex Drive Size—Hex-drive sockets are specialty sockets that require the use of another 1" socket when used with a ratchet wrench.
    Standard Clearance
    Drive
    Size
    OD
    Socket
    Shape
    For Drive
    Style
    For Fastener
    Type
    For Screw Size (Head Dia.)
    For Nut Size (Dia.)
    Overall
    Lg.
    Each
    1/4" Square Drive
    No. 431/64"Tri-GrooveTri-Groove
    		ScrewsNo. 4 Rounded (0.13")
    No. 6 Flat (0.268")    		—1"7393A34000000
    No. 631/64"Tri-GrooveTri-Groove
    		ScrewsNo. 6, No. 8 Rounded (0.208")
    No. 8, No. 10 Flat (0.372")    		—1"7393A3500000
    No. 1031/64"Tri-GrooveTri-Groove
    		Screws and Nuts1/4", No. 10, No. 12 Rounded (0.334")
    1/4" Flat (0.492")    		No. 6, No. 8 (0.406")1"7393A3600000
     
    3/8" Square Drive
    No. 2047/64"Tri-GrooveTri-Groove
    		Screws and Nuts5/16" Rounded (0.585")No. 10, 1/4" (0.661")1"7393A3700000
    No. 3031/32"Tri-GrooveTri-Groove
    		Nuts—3/8", 5/16" (0.864")1 1/4"7393A3800000
    No. 4031/32"Tri-GrooveTri-Groove
    		Nuts—1/2" (0.93")1 1/4"7393A10100000
     
    1" Hex Drive Size
    No. 751 5/8"Tri-GrooveTri-Groove
    		Nuts—M16, M20 (1.5")2"7393A43000000
     
    SteelAbout Steel
    Image of Product. Square Drive. Front orientation. Steel. Tri-Groove Sockets.
    Image of Specification. Front orientation. Tri-Groove Socket.

    Square

    Drive

    Tri-Groove

    Socket

    Hex Drive Size—Hex-drive sockets are specialty sockets that require the use of another 1" socket when used with a ratchet wrench.
    Standard Clearance
    Drive
    Size
    OD
    Socket
    Shape
    For Drive
    Style
    For Fastener
    Type
    For Nut Size (Dia.)
    Overall
    Lg.
    Each
    3/8" Square Drive
    No. 203/4"Tri-GrooveTri-Groove
    		NutsNo. 10, 1/4", M5, M6 (0.660")1"7393A44000000
    No. 203/4"Tri-GrooveTri-Groove
    		NutsNo. 10, 1/4", M6 (0.660")1"7393A5100000
    No. 301"Tri-GrooveTri-Groove
    		Nuts5/16", 3/8", 7/16", M8, M10 (0.830")1 1/4"7393A4500000
     
    1/2" Square Drive
    No. 401 1/4"Tri-GrooveTri-Groove
    		Nuts1/2", M12, M14 (0.945")1 1/4"7393A4200000
     
    7/8" Hex Drive Size
    No. 301"Tri-GrooveTri-Groove
    		Nuts5/16", 3/8", M8 (0.830")1 1/2"7393A5200000
     

    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"Steel
    		7309A21000000
    No. 5, No. 6, No. 7, No. 8, No. 9, No. 10, No. 11
    		1 1/4"1/2"Steel
    		7309A2200000
    No. 8, No. 9, No. 10, No. 11, No. 12, 1/4"
    		1 1/4"7/8"Steel
    		7309A2300000
    No. 12, 5/16"
    		1 1/4"3/4"Steel
    		7309A2400000
     

    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 Pouch7309A25000000
     

    Tri-Groove Socket Sets

    Grip the indentations around the outside of tri-groove fasteners.
    Black-Oxide Steel
    Image of Product. Front orientation. Sockets. Tri-Groove Socket Sets.
    Image of Specification. Front orientation. Tri-Groove Socket.
    No. of
    Pieces
    Components Included
    Includes
    Socket
    Shape
    Drive Size
    Each
    1/4" Square Drive
    41 Drive Tool
    3 Sockets    		Standard: No. 4 (For No. 4 Standard Screws and No. 6 Countersunk Screws)
    Standard: No. 6 (For Nos. 6 and 8 Standard Screws and Nos. 8 and 10 Countersunk Screws)
    Standard: No. 10 (For Nos. 10, 12, and 1/4" Standard Screws, 1/4" Countersunk Screws, and Nos. 6 and 8 Nuts)
    8" Long Socket Screwdiver Handle    		Tri-GrooveNo. 4, No. 6, No. 107393A41000000
     
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