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Apprentice answer

How much threaded rod needs to engage inside a coupling nut

2nd YearHangers, Supports & AnchorsStop and get direction

A stripped rod coupling is a failed support joint. Remove the load, replace the hardware, and verify full/equal thread engagement by the approved detail.

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Plain-English answer

A coupling nut only works when both rods are properly engaged. If one rod barely catches, the connection can strip under load or vibration.

Support the line first, replace stripped parts, use the correct coupling, engage both rods fully/equally, lock it against rotation, and inspect nearby long-rod extensions for the same mistake.

Ask Foreman

The rod coupling at [location] stripped and one side had poor engagement. I supported the run. Do you want new rods/couplings installed and the nearby extensions checked?

Verify before acting

Use this as training guidance. Foreman direction, approved drawings, project specs, manufacturer instructions, employer safety policy, and AHJ/code requirements always control the final answer.

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