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    Marson M34618 5/16-18 Mandrel Nosepiece Steel Set

    Part #: BR-34618

    The BR-34618 (Marson M34618) mandrel & nosepiece set is a hardened steel replacement component for use with Marson 325-RN / 325-RNK / tool model 4BB23 rivet-nut setter tools. It enables installation of rivet nuts of size 5/16-18 UNC with high precision and durability. Manufactured in Taiwan, this tool part ensures clean thread engagement, consistent performance during frequent use, and compatibility within heavy-duty fastening applications in automotive, fabrication, and industrial maintenance environments.