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    System of Measurement
    System of Measurement
    Inch
    Metric
    Thread Size
    Thread Size
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    5/16"-18
    Fastener Strength Grade/Class
    Fastener Strength
    Grade/Class
    Grade 2
    Grade 5
    Grade 8
    Grade 9
    Grade A
    Grade B7
    Grade B8
    Grade B8M
    Grade B16
    Thread Direction
    Thread Direction
    Right HandLeft Hand
    Socket Head Profile
    Socket Head Profile
    StandardLow
    Ultra-LowHigh
    Thread Spacing
    Thread Spacing
    Coarse
    Fine
    Thread Type
    Thread Type
    Inch
    NPT
    UNC
    UNF
    UNRC
    Rounded Head Style
    Rounded Head Style
    ButtonPan
    CarriageTruss
    RoundFillister
    Specifications Met
    Specifications Met
    ASME
    ASTM
    DIN
    FDA
    Fed. Spec.
    IFI
    Mil. Spec.
    NAS
    SAE
    UL
    Flat Head Profile
    Flat Head Profile
    Standard
    Undercut
    Wide
    Shoulder Diameter
    Shoulder Diameter
    default
    5/16"
    3/8"
    1/2"