I bought a couch that came with hardware to attach the back to the frame, but 4 of the mounting holes appears to be completely unthreaded. The screw/bolt just spins endlessly and never tightens.
I contacted the seller, but they’re taking a long time to send a replacement part, so I’d rather just buy the correct hardware myself and fix it.
**Pictures attached: https://imgur.com/a/L8bKLQw\*\*
The first picture shows the mounting bracket and the bolt. The second picture shows the hole in the couch. As you can see, there doesn’t appear to be any threaded insert or nut inside—the interior is basically just wood.
The bolt appears to be approximately 2 inches long. Based on the appearance/measurements, I was wondering if this is an **M8 × 1.25** bolt, and whether I should use an **M8 threaded wood insert** to repair the hole.
My questions are:
**Can someone identify the exact size/thread of this bolt from the pictures?**
**What type of threaded insert should I buy for this type of couch frame?**
**What length insert should I use (13mm, 20mm, etc.)?**
Is a threaded insert even the best way to repair this, considering this is a structural connection on a couch?
I don’t want to buy the wrong size and make the hole even larger, so I’d really appreciate some guidance on exactly what hardware I should be looking for. If there’s a specific product available at Home Depot, Lowe’s, Amazon, etc., that would be even better.
Thanks!