How does a split-ring lock washer help fasteners?

• A. By providing a broad surface for even load distribution
• B. By using a threaded design to resist removal
• C. By being cut and bent slightly to prevent loosening
• D. By integrating teeth around its edge for grip

Answer: (C)

A split-ring lock washer is designed specifically to prevent fasteners from loosening due to vibrations or shifting. Its unique shape, which involves being cut and then slightly bent, creates a spring-like effect when it is placed under a bolt or nut. This spring action allows the washer to exert pressure against the fastener, maintaining tension and friction even as forces act on the assembly.

The split design and the bent shape ensure that it can grip the underlying surface more effectively, accommodating any minor shifts in alignment and resisting the loosening effect that vibrations can cause. This functionality makes split-ring lock washers a reliable choice in applications where maintenance of tight connections is crucial.

While other answers might imply a benefit of lock washers, such as providing a broad surface or incorporating teeth for grip, the specific design and purpose of the split-ring washer focus on its ability to prevent loosening through its unique cut and bent configuration.