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4-40x5/16 UNC Button Head Screw Plain

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    ​​Terms and Conditions
     

    Internal Reference: BHS4-40U516P

    Button Head Screw dimensions


    4-40x5/16 UNC Button Head Screw Plain

    • ASME/ANSI B18.3
    • Hexagon Drive
    • Unified Coarse Thread
    • ASTM A574
    • Steel Thermal Black Oxide
    		Minimum
    		Maximum
    Threads per inch40 tpi
    D - Body diameter

    		0.1120
    A - Head diameter
    		​
    		0.2010
    		0.2130
    w - Hex key
    		​1/16"


    G - Key depth​
    		 0.0350
    T - Head height​
    		0.05100.0590
    L - Overall length5/16"


    c - Thread length
    		 5/16"
    ** All dimensions are in inches

    Button socket screws, are used in applications where the head protrudes above the mating parts and a more decorative appearance is required. The larger contact surface area beneath the head of the screw spreads the load more evenly and reduces the risk of damage to the mating surface. Button head socket screws should not be used in in critical applications where high tensile strength is essential as the head design may not be adequate for the loads required.

    Dimensions are indicative only. Confirmation prior to ordering is advised if any of these dimensions are of critical importance to your application.