McMaster-Carr logo
    Filter by
    System of Measurement
    Material
    Fastener Head Type
    Head Diameter
    Attribute Image
    Thread Spacing
    Industrial Info Compare
    Thread Type
    Industrial Info Compare
    Head Height
    Attribute Image
    Drive Style
    Industrial Info Snippet
    Tensile Strength
    Industrial Info Snippet
    Socket Head Profile
    DFARS Specialty Metals
    Industrial Info Compare
    Thread Direction
    Hardness
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    Specifications Met
    U.S.–Mexico–Canada Agreement (USMCA) Qualifying
    Performance
    Tip Type
    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)
    19 Products

    Steel Socket Head Screws

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

    Fully 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
    Lg.
    Dia.
    Ht.
    Threading
    Thread
    Spacing
    Tensile Strength,
    psi
    Specs.
    Met
    Pkg.
    Qty.
    Pkg.
    Black-Oxide Alloy Steel
     
    2 1/4"-4 1/2
    4"3 3/8"2 1/4"Fully ThreadedCoarse
    		170,000ASTM A574190044A2240000000
    6"3 3/8"2 1/4"Partially ThreadedCoarse
    		170,000ASTM A574190044A225000000
    8"3 3/8"2 1/4"Partially ThreadedCoarse
    		170,000ASTM A574190044A226000000
    10"3 3/8"2 1/4"Partially ThreadedCoarse
    		170,000ASTM A574190044A227000000
     
    2 1/4"-8
    6"3 3/8"2 1/4"Partially ThreadedCoarse
    		170,000ASTM A574190044A228000000
    8"3 3/8"2 1/4"Partially ThreadedCoarse
    		170,000ASTM A574190044A229000000
    10"3 3/8"2 1/4"Partially ThreadedCoarse
    		170,000ASTM A574190044A230000000
     
    2 1/2"-4
    4"3 3/4"2 1/2"Fully ThreadedCoarse
    		170,000ASTM A574190044A231000000
    6"3 3/4"2 1/2"Fully ThreadedCoarse
    		170,000ASTM A574190044A232000000
    8"3 3/4"2 1/2"Partially ThreadedCoarse
    		170,000ASTM A574190044A233000000
    10"3 3/4"2 1/2"Partially ThreadedCoarse
    		170,000ASTM A574190044A234000000
     
    2 1/2"-8
    4"3 3/4"2 1/2"Fully ThreadedFine
    		170,000ASTM A574190044A235000000
    6"3 3/4"2 1/2"Fully ThreadedFine
    		170,000ASTM A574190044A236000000
    8"3 3/4"2 1/2"Partially ThreadedFine
    		170,000ASTM A574190044A237000000
    10"3 3/4"2 1/2"Partially ThreadedFine
    		170,000ASTM A574190044A238000000
     

    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.
    Length
    Each
    Package
    Drive
    Size
    Overall
    Relative
    Long
    Leg
    Short
    Leg
    Finish
    Each
    Pkg.
    Qty.
    Pkg.
    Alloy Steel
     
    Hex
    1 3/4"17"Short15 1/4"4"Black Oxide7122A97000000057122A9750000000
    1 3/4"25"Long23 1/4"4 1/2"Black Oxide7122A8300000027122A835000000
     
    back to top