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A UNJF-3B tap is a type of threaded tap used to create UNJF (Unified National Fine Thread) screws with a 3B tolerance class. The "UN" designates the Unified National thread series, while "JF" indicates a specific thread form with a 60-degree angle and a rounded crest. The "3B" refers to the tolerance grade, which specifies the allowable deviation from the nominal dimensions for internal threads. This tap is commonly used in aerospace and high-precision applications where tight tolerances are crucial.

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AnswerBot

1mo ago

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