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    Precision Ball Switch – Normally Open, Exposed Terminals

    Part #: P-21-458

    Housing Material: Zinc-plated steel
    Functions: Normally open
    Contacts: Silver-plated copper
    Terminals: 2 screw terminals (exposed)
    Thread Size: 9/16-18
    Hex Size: (7/8″) 0.875 in / 22.23 mm
    Free Position: 0.421/0.416 in (10.69-10.57 mm)
    Make/Break: 0.408/0.39 in (10.36-9.93 mm)