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    System of Measurement
    System of Measurement
    Inch
    Metric
    Tooth Location
    Tooth Location
    External
    Internal
    Internal/External
    DFARS (Defense Acquisition Regulations Supplement)
    DFARS (Defense
    Acquisition
    Regulations Supplement)
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    DFARS Specialty Metals
    COTS-Exempt
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    DFARS Specialty Metals
    Compliant
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    Specifications Met
    Specifications Met
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    ASME
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    DIN
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    Mil. Spec.
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    NAS
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    Shape
    Shape
    KeyedD-Profile
    For Shaft Diameter
    For Shaft Diameter
    3/8"
    1/2"
    5/8"
    3/4"
    7/8"
    1"
    1 1/8"
    1 1/4"
    1 3/8"
    1 1/2"
    1 3/4"
    2"
    Individual/Set
    Individual/Set
    Individual
    Set
    Notch Width
    Notch Width
    default
    1/8"
    3/16"
    1/4"
    5/16"
    3/8"
    7/16"
    1/2"
    Minimum Hardness
    Minimum Hardness
    Rockwell B60
    Rockwell B80
    Rockwell B84
    Rockwell B90
    Magnetic Properties
    Magnetic Properties
    Magnetic
    May Be Mildly Magnetic
    Length
    Length
    default
    1/4"
    3/8"
    1/2"
    3/4"
    1"
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