McMaster-Carr logo
    Filter by
    Square Drive Size
    Attribute Image
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    U.S.–Mexico–Canada Agreement (USMCA) Qualifying
    DFARS Specialty Metals
    Overall Length
    Attribute Image
    Fastener Type
    For Screw Head Style
    Industrial Info Compare
    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)
    9 Products

    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
     

    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
    1"1 5/8"Tri-GrooveTri-Groove
    		Nuts—M16, M20 (0.625", 16 mm, 18 mm, 0.75", 20 mm)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
    1/2" Square Drive
    1/2"1 1/4"Tri-GrooveTri-Groove
    		Nuts1/2", M12, M14 (12 mm, 0.5", 14 mm)1 1/4"7393A42000000
     
    back to top