# Arm assembly hidden nut tip

**URL:** https://forums.maslowcnc.com/t/arm-assembly-hidden-nut-tip/20718
**Category:** Troubleshooting
**Created:** [April 18, 2024, 6:51pm UTC](https://forums.maslowcnc.com/t/arm-assembly-hidden-nut-tip/20718 "2024-04-18T18:51:55Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![noiseislife](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/noiseislife/32/22834_2.png) [@noiseislife](https://forums.maslowcnc.com/u/noiseislife)
#### Post date: [April 18, 2024, 6:51pm UTC](https://forums.maslowcnc.com/t/arm-assembly-hidden-nut-tip/20718/1 "2024-04-18T18:51:55Z")

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I was having trouble getting 1 of the 8 hidden nuts in the arms to engage, one of the 4 that is completely obscured.

Out of curiosity I tried one of the m3x16 screws and it successfully engaged but was too long for the available space.

I was reluctant to try dismantling the sub-assembly because of the thread locked screws in the motor so I ordered some m3x14 screws and it worked perfectly.