McMaster-Carr logo
    Filter by
    System of Measurement
    Thread Size
    Industrial Info Snippet
    Fastener Strength Grade/Class
    Industrial Info Snippet
    Drive Style
    Industrial Info Snippet
    Head Diameter
    Attribute Image
    Fastener Head Type
    Socket Head Profile
    Thread Pitch
    Industrial Info Snippet
    Attribute Image
    Thread Type
    Specifications Met
    Head Height
    Attribute Image
    Thread Spacing
    Industrial Info Snippet
    Material
    Sold As
    U.S.–Mexico–Canada Agreement (USMCA) Qualifying
    Hardness
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    DFARS Specialty Metals
    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

    Steel Socket Head Screws

    Image of Product. Front orientation. Socket Head Screws. Steel Socket Head Screws, Fully Threaded.

    Fully Threaded

    Image of Product. Front orientation. Socket Head Screws. Steel Socket Head Screws, Partially Threaded.

    Partially Threaded

    Made of alloy steel, these screws are the standard for high-strength fastening. Use them in high-load applications such as dies, presses, and heavy equipment. The deep, six-point socket keeps the hex key from slipping out and damaging the drive.
    Length is measured from under the head.
    Black-Oxide Alloy Steel—Typically chosen for their appearance, these screws have a dark, matte coating to create a finished look. They offer minimal corrosion resistance, so they're best for dry environments.
    Head,
    mm
    Lg.,
    mm
    Dia.
    Ht.
    Threading
    Thread
    Spacing
    Tensile Strength,
    psi
    Fastener Strength
    Grade/Class
    Pkg.
    Qty.
    Pkg.
    Black-Oxide Alloy Steel
     
    M33 × 3.5 mm
    1005033Fully ThreadedCoarse
    		170,000Class 12.9
    		191290A283000000
    1205033Partially ThreadedCoarse
    		170,000Class 12.9
    		191290A28400000
     

    Angled-Drive Ball-Tip L-Keys

    Image of ProductInUse. Front orientation. Contains Annotated. Angled-Drive Ball-Tip L-Keys.
    Image of Product. Front orientation. L-Keys. Angled-Drive Ball-Tip L-Keys.
    Turn screws at an angle when you can’t access them head on. These L-keys have a ball tip on the long leg that engages the drive with less contact than a straight tip. Ball tips are handy for corners and tightly packed areas, such as control panels and junction boxes. However, they don’t grip as tightly as straight tips and may strip the drive of the fastener if you crank them too hard. These L-keys are precision manufactured to tight tolerances.
    Alloy Steel—These L-keys handle high torque without bending or breaking, so they’ll last a lifetime.
    Long—The most common option, these L-keys have a balanced length for everyday reach and torque.
    Length
    Ball
    Drive Size,
    mm
    Overall
    Relative
    Long
    Leg
    Short
    Leg
    Location
    Shape
    Finish
    Max. Access
    Angle
    Each
    Alloy Steel
     
    Hex
    2415 1/2"Long14 1/2"3 1/2"Single BallRoundBlack Phosphate Coated25°5503A58000000
     

    L-Keys

    Image of Product. Front orientation. L-Keys. L-Keys.
    The highest quality L-keys you can buy for tightening and loosening screws. Our L-keys are precision manufactured to tight tolerances for an exact fit.
    Alloy Steel—These L-keys handle high torque without bending or breaking, so they’ll last a lifetime.
    Short—A short long leg fits into tight spaces where you have less room to swing, making these ideal for confined areas.
    Long—The most common option, these L-keys have a balanced length for everyday reach and torque.
    Extra Long—Reach deep fasteners with the extra-long leg on these L-keys. Flip them around and grip the long leg with two hands for extra leverage to loosen stubborn screws.
    Length
    Each
    Package
    Drive Size,
    mm
    Overall
    Relative
    Long
    Leg
    Short
    Leg
    Finish
    Each
    Pkg.
    Qty.
    Pkg.
    Alloy Steel
     
    Hex
    249 9/16"Short8 5/8"3 1/2"Black Oxide7289A2600000057289A2610000000
    2415 3/16"Long14 1/4"3 1/2"Black Oxide6958A360000056958A361000000
    2420 15/16"Extra Long20"3 1/2"Black Oxide7122A7520000057122A167000000
     
    back to top