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  1. LucasVidler

    Screw holding Loudspeaker in wood box is loosening - Spring Washer?

    I have a product in production that is basically a speaker in a wood box mounted with a single rear screw. The configuration is illustrated in the attachment. Wood: MDF Speaker Material: Mild Steel Screw: M8 x 50 mm, Hex Head, Class 8.8, Zinc Plated, Torqued to 5kg-cm Washer: 15mm OD, Zinc...

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