McMaster-Carr logo
    Filter by
    System of Measurement
    Wrench Opening Shape
    Head Style
    Relative Length
    Number of Pieces
    Appearance
    For Use With
    Material
    Container Type
    DFARS Specialty Metals
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    U.S.–Mexico–Canada Agreement (USMCA) Qualifying
    Industrial Info Compare
    Opening Angle
    Attribute Image
    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

    Sold As

    Wrench Opening Shape

    Spline Ratcheting Combination Wrench Sets

    Image of Product. Front orientation. Combination Wrenches. Spline Ratcheting Combination Wrench Sets.
    Image of Attribute. Front orientation. Contains Annotated. Standard Length, Sold as Sets, Ratcheting.
    Image of Specification. Spline Opening. Front orientation. ZoomedIn view. Contains Border. Spline Opening. Standard Length, Sold as Sets, Ratcheting.

    Spline Opening

    These versatile wrenches turn a range of hex, 12-point, and spline fasteners. With more points of contact than 12-point openings, the spline-shaped box end gets a better grip on nuts and bolts and is less likely to round off corners. Rotate these wrenches without having to remove and reposition them. They're commonly used where you don't have enough space for full turns. To switch between loosening and tightening, flip them over.
    Polished—The smooth surface is easy to wipe clean of grime. The mirror-like finish lends a high-end look to any toolkit.
    Chrome-Plated Steel—The most popular finish, these wrenches won't rust or chip. Although they withstand moisture better than black oxide, they don't hold up to harsh chemicals as well as stainless steel.
    Box End
    No. of
    Pieces
    Drive Size
    External Spline Drive Size
    Number
    of Teeth
    Overall Lg.
    Open-End Opening
    Angle
    Appearance
    Material
    Container Type
    Each
    Spline Opening
    111/4", 9/32", 5/16", 11/32", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4"No. 8, No. 9, No. 10, No. 11, No. 12, No. 14, No. 16, No. 18, No. 20, No. 22, No. 24725 1/8" to 11"15°PolishedChrome-Plated SteelPlastic Roll-Up Pouch4950A690000000
     

    Combination Wrenches

    Image of Product. Front orientation. Combination Wrenches. Combination Wrenches.
    Image of Attribute. Front orientation. Contains Annotated. Combination Wrenches.
    Image of Attribute. Front orientation. Contains Annotated. Combination Wrenches.
    Image of Specification. 12-Point Opening. Front orientation. ZoomedIn view. Contains Border. 12-Point Opening. Combination Wrenches.

    12-Point

    Opening

    Your go-to wrenches for routine maintenance. With two different ends, you need fewer tools to tighten and loosen nuts and bolts. The open end slides onto the side of fasteners for adjustments in tight spots. When nuts and bolts won't budge, the box end fully encircles them to apply maximum torque. Drop forged for added strength, these wrenches will be part of your toolbox for life.
    12-Point Opening—The most common opening, these wrenches work on hex and 12-point nuts and bolts. They slide onto hex heads at more angles than 6-point fasteners for quicker engagement, but they're more likely to slip when you apply more torque.
    Chrome-Plated Steel—The most popular finish, these wrenches won't rust or chip. Although they withstand moisture better than black oxide, they don't hold up to harsh chemicals as well as stainless steel.
    Polished—The smooth surface is easy to wipe clean of grime. The mirror-like finish lends a high-end look to any toolkit.
    Box End
    Open
    End
    Drive
    Size
    Overall
    Lg.
    Head Offset
    Angle
    Head
    Thick.
    Opening
    Angle
    Head
    Thick.
    Appearance
    Each
    12-Point Opening
     
    Chrome-Plated Steel
    9/32"5 7/16"15°7/32"15°5/32"Polished5441A107000000
     

    Stubby Combination Wrench Sets

    Image of Product. Front orientation. Combination Wrenches. Stubby Combination Wrench Sets, Plastic Roll-Up Pouch.

    Plastic Roll-Up Pouch

    Image of Attribute. Front orientation. Contains Annotated. Stubby Combination Wrench Sets.
    Image of Attribute. Front orientation. Contains Annotated. Stubby Combination Wrench Sets.
    Image of Specification. 12-Point Opening. Front orientation. ZoomedIn view. Contains Border. 12-Point Opening. Stubby Combination Wrench Sets.

    12-Point

    Opening

    Turn nuts and bolts in tight spaces with the wrenches in these sets. They are up to 50% shorter than others to squeeze into spots without enough clearance to make full turns, such as engine compartments. However, you may need longer wrenches for higher-leverage jobs.
    12-Point Opening—The most common opening, these wrenches work on hex and 12-point nuts and bolts. They slide onto hex heads at more angles than 6-point fasteners for quicker engagement, but they're more likely to slip when you apply more torque.
    Chrome-Plated Steel—The most popular finish, these wrenches won't rust or chip. Although they withstand moisture better than black oxide, they don't hold up to harsh chemicals as well as stainless steel.
    Polished—The smooth surface is easy to wipe clean of grime. The mirror-like finish lends a high-end look to any toolkit.
    No. of
    Pieces
    Drive Size
    Overall Lg.
    Box-End Head
    Offset Angle
    Open-End Opening
    Angle
    Appearance
    Container Type
    Each
    12-Point Opening
     
    Chrome-Plated Steel
    111/4", 9/32", 5/16", 11/32", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4"3 1/4" to 5 1/2"15°15°PolishedPlastic Roll-Up Pouch5443A440000000
     

    Stubby Combination Wrenches

    Image of Product. Front orientation. Combination Wrenches. Stubby Combination Wrenches.
    Image of Attribute. Front orientation. Contains Annotated. Stubby Combination Wrenches.
    Image of Attribute. Front orientation. Contains Annotated. Stubby Combination Wrenches.
    Image of Specification. 12-Point Opening. Front orientation. ZoomedIn view. Contains Border. 12-Point Opening. Stubby Combination Wrenches.

    12-Point

    Opening

    Turn nuts and bolts in tight spaces. These wrenches are up to 50% shorter than others to squeeze into spots without enough clearance to make full turns, such as engine compartments. However, you may need longer wrenches for higher-leverage jobs.
    12-Point Opening—The most common opening, these wrenches work on hex and 12-point nuts and bolts. They slide onto hex heads at more angles than 6-point fasteners for quicker engagement, but they're more likely to slip when you apply more torque.
    Chrome-Plated Steel—The most popular finish, these wrenches won't rust or chip. Although they withstand moisture better than black oxide, they don't hold up to harsh chemicals as well as stainless steel.
    Polished—The smooth surface is easy to wipe clean of grime. The mirror-like finish lends a high-end look to any toolkit.
    Box End
    Open
    End
    Drive
    Size
    Overall
    Lg.
    Head Offset
    Angle
    Head
    Thick.
    Opening
    Angle
    Head
    Thick.
    Appearance
    Each
    12-Point Opening
     
    Chrome-Plated Steel
    9/32"3 3/8"15°7/32"15°3/16"Polished5443A32000000
     

    Spline Ratcheting Combination Wrenches

    Image of Product. Front orientation. Combination Wrenches. Spline Ratcheting Combination Wrenches.
    Image of Attribute. Front orientation. Contains Annotated. Standard Length, Ratcheting, Sold Individually.
    Image of Attribute. Front orientation. Contains Annotated. Standard Length, Ratcheting, Sold Individually.
    Image of Specification. Spline Opening. Front orientation. ZoomedIn view. Contains Border. Spline Opening. Standard Length, Ratcheting, Sold Individually.

    Spline Opening

    These versatile wrenches turn hex, 12-point, and spline fasteners. With more points of contact than 12-point openings, the spline-shaped box end gets a better grip on nuts and bolts and is less likely to round off corners. Rotate these wrenches without having to remove and reposition them. They're commonly used where you don't have enough space for full turns. To switch between loosening and tightening, flip them over.
    Chrome-Plated Steel—The most popular finish, these wrenches won't rust or chip. Although they withstand moisture better than black oxide, they don't hold up to harsh chemicals as well as stainless steel.
    Polished—The smooth surface is easy to wipe clean of grime. The mirror-like finish lends a high-end look to any toolkit.
    Box End
    Open
    End
    Drive
    Size
    Overall
    Lg.
    External Spline
    Drive Size
    Head Offset
    Angle
    Head
    Thick.
    Number
    of Teeth
    Opening
    Angle
    Head
    Thick.
    Appearance
    Each
    Spline Opening
     
    Chrome-Plated Steel
    9/32"5 11/64"No. 915°17/64"7215°11/64"Polished4950A32000000
     
    back to top