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    System of Measurement
    System of Measurement
    Inch
    Metric
    Thread Size
    Thread Size
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    1/4"-28
    Thread Type
    Thread Type
    UNC
    UNF
    UNRF
    Fastener Strength Grade/Class
    Fastener Strength
    Grade/Class
    Grade 2
    Grade 5
    Grade 8
    Grade B7
    Grade B8
    Thread Direction
    Thread Direction
    Right Hand
    Left Hand
    Right Hand and Left Hand
    Socket Head Profile
    Socket Head Profile
    StandardLow
    Specifications Met
    Specifications Met
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    Mil. Spec.
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    SAE
    Thread Spacing
    Thread Spacing
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    Head Width
    Head Width
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    1/4"
    5/16"
    3/8"
    7/16"
    23/32"
    Rounded Head Style
    Rounded Head Style
    ButtonPan
    TrussRound
    Fillister
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