1/4x2-1/2 UNC Hex Set Screw Stainless Grade 304

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    Internal Reference: SET1/4U212SS

    1/4x2-1/2 UNC Hex Set Screw Stainless Grade 304

    • ANSI B18.2.1
    • Hex Head
    • Fully Threaded
    • Unified Coarse Thread
    • A2 70
    • 304 Stainless Steel


    MinimumMaximum
    Threads per inch20 tpi
    D - Body diameter1/4"
    0.2458
    0.2508
    f - Across flats 7/16"
    0.42880.4388
    h - Across corners 

    0.5058
    T - Head thickness 
    0.15080.1638
    L - Overall length 2 1/2"


    ** All dimensions are in inches

    Hex Set Screws is the term used for what is effectively a fully threaded hexagon head bolt which doesn't contain a shank (plain or unthreaded section). Although set screws can be used with a nut, typically they will be used in applications where they are threaded directly into something containing a matching pre-threaded hole such as a machinery component. The hex head set screw is designed to be tightened/removed with a suitably fitted wrench, spanner, socket or other hex driver.