Which component is used to secure rigging connections with a threaded pin?

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Prepare for the USITT Backstage Terminology Safety Test. Study with flashcards and multiple-choice questions. Each question includes hints and explanations. Get ready for your exam today!

Multiple Choice

Which component is used to secure rigging connections with a threaded pin?

Explanation:
Securing rigging connections with a threaded pin is accomplished with a screw-pin shackle. A shackle is a simple, load-bearing connector shaped like a U with a pin that screws into the body. Tightening the threaded pin closes the opening and keeps the connection from opening under load, providing a reliable, quick-release method for attaching rigging components like slings or cables. Turnbuckles are used to adjust length and tension, not to secure connections with a threaded pin. Head blocks and loft blocks are pulleys used to redirect rope or cable and do not provide a threaded-pin securing mechanism.

Securing rigging connections with a threaded pin is accomplished with a screw-pin shackle. A shackle is a simple, load-bearing connector shaped like a U with a pin that screws into the body. Tightening the threaded pin closes the opening and keeps the connection from opening under load, providing a reliable, quick-release method for attaching rigging components like slings or cables.

Turnbuckles are used to adjust length and tension, not to secure connections with a threaded pin. Head blocks and loft blocks are pulleys used to redirect rope or cable and do not provide a threaded-pin securing mechanism.

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