What are the structural types of snap hooks?

(1) "8" shaped snap hooks.

The opening and closing mechanism is a spring tongue automatic reset type, and the lock arm is equipped with a self-locking bolt composed of a safety pin, a compression spring and a wrench. When opening the hook, lift the wrench with your fingers to disengage the safety pin, and press the lock arm down to open the lock arm. If the lock arm is released, the lock arm is automatically reset under the elastic force of the return spring, and the self-locking bolt closes the hook opening through the outward elastic force of the opening and closing mechanism, and the compression spring pushes the safety pin tightly to lock the lock arm .

(2) "D"-shaped snap hooks

It is composed of a hook body and a lock arm. The opening and closing mechanism is a spring tongue automatic reset type. The lock arm part has two safety structure designs of torsion self-locking and threaded hand lock. The self-locking structure is equipped with a rotating compression spring and the lock arm The sleeve can be automatically reset and locked. The lock arm of the hand-lock structure has threads. Rotating the lock arm sleeve can open and lock the safety hook.

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