Components with a captive mechanism should be used
NBK has standardized products for fall prevention of parts, such as knobs, pulls and special screws. Ideal for securing protective and inspection covers that are frequently installed and removed.
■Captive Washers：Prevents screw fall-off and loss simply by assembling it onto a commercially available screw.
■Fall prevention machining：Machining to prevent dropping or losing screws, knobs, etc. can be performed.