Nitto Seiko JOISTUD Clinching Stud Technology
In its announcement of 25 January 2023, Nitto Seiko renamed its existing clinching stud JOISTUD-S, with S denoting the standard type, and announced three application-specific variants for sale from 1 February 2023: JOISTUD-HT for higher anti-rotation torque, JOISTUD-SS for space saving and JOISTUD-WP for water resistance.
The stud is installed by pressing it into the mating sheet. An outer-rimmed anti-rotation feature and an internal recess accommodate displaced sheet material, helping reduce sheet warpage and burr formation. The HT variant adds ribs to improve resistance to rotation; SS reduces the head diameter, while WP incorporates a sealing feature.
The functions differ by variant. Joint performance and water resistance require the specified mating material, dimensions and installation conditions; they are not blanket guarantees for every assembly.
Manufacturer references
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