This SAE Parts Standard provides dimensional and quality assurance requirements for studs in the following configurations in standard materials used for ship system applications:
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Continuous thread studs in UNRC and 8UNR series in the following threads and diameters:
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UNRC threads (1/4 through 4 inches)
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UNRF threads (1/4 through 1-1/2 inches)
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8UNR threads (1-1/8 through 4 inches)
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Double end studs (clamping type) where both ends are of the same minimum thread length in the following threads and diameters:
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UNRC threads (1/4 through 4 inches)
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UNRF threads (1/4 through 1-1/2 inches)
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8UNR threads (1-1/8 through 4 inches)
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Different thread forms on each end are permissible.
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Double end studs (tap end type) where the tap end thread length is equivalent to 1-1/2 nominal diameters:
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