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The CAMPBELL 3990401 is a locking latch kit designed as a safety accessory for lifting hooks. It provides a positive locking mechanism that prevents the hook from accidentally opening during lifting operations, reducing the risk of load release. This kit fits hook sizes 5 through 25, making it a versatile replacement or upgrade component for use in rigging, material handling, and overhead lifting applications. It is installed by riggers, millwrights, and other trade professionals who work with hoisting and lifting equipment.
This locking latch kit is suited for use on a range of hook sizes commonly found in industrial, construction, and maintenance environments. It is appropriate for both light-duty and moderate rigging setups where hook security is required. The kit is typically used when an existing latch is worn, damaged, or missing, or when upgrading a standard hook to a locking configuration for compliance with site safety requirements.
Designed for use with hook sizes 5 through 25 as specified by the manufacturer. Verify hook size before installation to confirm proper fit.
Installation should be performed by a qualified rigger or maintenance technician familiar with lifting hardware. Ensure the lifting hook is fully de-rigged and free of any load before servicing or replacing the latch. Follow applicable ASME B30 standards for inspection and maintenance of below-the-hook lifting devices. Confirm the latch seats and locks correctly before returning the hook to service.
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