McMaster-Carr logo
    Filter by
    System of Measurement
    Drive Size
    Head Style
    Wrench Style
    Sold As
    Wrench Opening Shape
    Number of Heads
    Head Thickness
    Specifications Met
    DFARS Specialty Metals
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    U.S.–Mexico–Canada Agreement (USMCA) Qualifying
    For Use With
    Relative Length
    Wrench Type
    Material
    Opening Angle
    Attribute Image
    Ratcheting
    Thread Size
    Industrial Info Snippet
    Socket Shape
    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

    Open-End Wrenches

    Image of Product. Front orientation. Open-End Wrenches. Open-End Wrenches.
    Image of Attribute. Front orientation. Contains Annotated. Open-End Wrenches.
    Image of Specification. Front orientation. ZoomedIn view. Contains Border. Round Opening. Open-End Wrenches.

    Round

    Opening

    Adjust fasteners in tight spots such as motor housings, HVAC systems, and under sinks when you can't get a grip from the top. Slip around nuts and bolts from the side, unlike box wrenches that require more space to fit over fasteners. These wrenches are ASME or DIN certified—they handle more torque than run-of-the-mill alternatives and precisely fit fasteners so they don't round them off. Drop forged for added strength, they will be part of your toolbox for life.
    Round Opening—The rounded edges spread force evenly to prevent stripping your fasteners. Use them on hex-head fasteners.
    Steel—Best for dry environments since moisture will cause these wrenches to rust.
    Drive Size,
    mm
    Overall
    Lg.
    Opening
    Angle
    Head
    Thk.
    Specs.
    Met
    Each
    Round Opening
     
    Steel
    8527 1/8"15°29/32"DIN 8945488A440000000
     

    Strikable Open-End Wrenches

    Image of Product. Front orientation. Open-End Wrenches. Strikable Open-End Wrenches.
    Image of Attribute. Front orientation. Contains Annotated. Strikable Open-End Wrenches.
    Image of Specification. Front orientation. ZoomedIn view. Contains Border. Round Opening. Strikable Open-End Wrenches.

    Round

    Opening

    Don't wrestle with stuck fasteners. Strike the handle with a hammer to break them free. Designed to take the hits, these wrenches are drop forged for added strength and will be part of your toolbox for life. Also known as slugging wrenches.
    Round Opening—The rounded edges spread force evenly to prevent stripping your fasteners. Use them on hex-head fasteners.
    Steel—Best for dry environments since moisture will cause these wrenches to rust.
    Drive Size,
    mm
    Overall
    Lg.
    Opening
    Angle
    Head
    Thk.
    Specs.
    Met
    Each
    Round Opening
     
    Steel
    8516 1/4"15°1 11/32"DIN 1336973A410000000
     

    Spanner Sockets

    Image of ProductInUse. Socket Shown With Wrench (Sold Separately). Front orientation. Exploded view. Contains Annotated. Sockets. Spanner Sockets.
    Image of Product. Front orientation. Sockets. Spanner Sockets.

    Socket Shown With Wrench (Sold

    Separately)

    Image of Attribute. Front orientation. Contains Annotated. Spanner Sockets.
    Image of Specification. 4-Pin. Front orientation. 4-Pin Socket. Spanner Sockets.

    4-Pin

    For easy tightening and loosening, these sockets have pins that grip the slotted sides on bearing nuts. These sockets require less clearance around bearings than standard hook spanner wrenches, so they’re good in tight spaces. Use them with a square-drive wrench handle or a ratchet wrench; they’re not for use with impact wrenches.
    Clearance
    Dp., mm
    Drive Size,
    mm
    Overall
    Lg., mm
    OD,
    mm
    For Nut Thread
    Size
    For Bearing Nut
    Specs. Met
    For Nut
    Dia., mm
    Nut
    Bolt
    Material
    Each
    4-Pin Socket
     
    3/4" Square Drive
    859094M65
    		DIN 981, ISO 2982851562Steel5510N189000000000
     

    6-Point Impact Sockets

    Achieve the best possible grip on hex fasteners and prevent rounding. These sockets are made to withstand the high torque and force of impact tools.
    Standard Clearance
    Image of Product. Front orientation. Sockets. 6-Point Impact Sockets, Standard Clearance.
    Image of Attribute. Front orientation. Contains Annotated. 6-Point Impact Sockets.
    Image of Specification. Front orientation. 6-Point Socket.

    6-Point

    Socket

    1" Square Drive—3/4", 1", and 1 1/2" square drive size sockets require a locking retainer. Use with an impact wrench that has a pin-style socket retainer, or use a socket retaining ring with tools that have a hole- or hole-and-ring style socket retainer.
    Sockets
    Retaining Rings
    Clearance
    Dp.
    Drive Size,
    mm
    Nut
    Bolt
    Compatible Retaining
    Ring ID
    Material
    Overall
    Lg.
    Socket
    Shape
    Each
    Each
    1" Square Drive
    851 31/32"3"2 1/2"Black-Oxide Steel4 3/16"6-Point54155A3400000005550A61300000
     
    back to top