McMaster-Carr logo
    Filter by
    Military Specification
    System of Measurement
    Thread Size
    Industrial Info Snippet
    Length
    Attribute Image
    Drive Style
    Industrial Info Snippet
    Fastener Head Type
    Specifications Met
    Countersink Angle
    Industrial Info Snippet
    Attribute Image
    Flat Head Profile
    Material
    Thread Type
    Performance
    Sold As
    U.S.–Mexico–Canada Agreement (USMCA) Qualifying
    Export Control Classification Number (ECCN)
    Industrial Info Snippet
    DFARS Specialty Metals
    Hardness
    Head Diameter
    Attribute Image
    Tip Type
    Thread Spacing
    Industrial Info Snippet
    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)
    1 Product

    Steel Hex-Drive Flat Head Screws

    Image of Product. Front orientation. Flat Head Screws. Steel Hex-Drive Flat Head Screws.
    Our strongest hex-drive flat head screws. They're made of alloy steel, so they have nearly twice the tensile strength of other screws. With six contact points, the hex drive withstands more torque than slotted and Phillips to securely grip your driver without slipping and stripping the drive.
    Length is measured from the top of the head.
    Cadmium-Plated Alloy Steel—The plating reduces friction between the screw and your mounting surface to prevent sticking when you tighten or loosen them. It also creates a barrier against rust.
    Standard Profile—Standard-profile heads are the most common choice for flat head screws.
    Military Specification—These screws are manufactured and tested to meet strict U.S. military standards for material and construction.
    Head
    Lg.
    Countersink
    Angle
    Flat Head
    Profile
    Dia.
    Ht.
    Threading
    Tensile Strength,
    psi
    Mil.
    Spec.
    Each
    Cadmium-Plated Alloy Steel
     
    4-40
    3/8"82°
    		Standard
    		0.255"0.083"Fully Threaded140,000MS24667-293401A10200000
    MIL. Spec. Alloy Steel Hex-Drive Flat Head Screw, Cadmium-Plated, 4-40 Thread Size, 3/8" Long
    EachIn stock
     
    back to top