# Stripped hex head bolt on Z-20 braking motor

**URL:** <https://forum.onefinitycnc.com/t/stripped-hex-head-bolt-on-z-20-braking-motor/29081>\
**Category:** Troubleshooting (Elite Series)\
**Created:** [October 26, 2024, 4:26pm UTC](https://forum.onefinitycnc.com/t/stripped-hex-head-bolt-on-z-20-braking-motor/29081 "2024-10-26T16:26:34Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Chief515](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.onefinitycnc.com/chief515/32/10827_2.png) [@Chief515](https://forum.onefinitycnc.com/u/Chief515)\
**Post date:** [October 26, 2024, 4:26pm UTC](https://forum.onefinitycnc.com/t/stripped-hex-head-bolt-on-z-20-braking-motor/29081/1 "2024-10-26T16:26:34Z")

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I bought the new braking motor for my Elite Journeyman. In removing the coupler from the old motor to put on the new one, the bolt stripped and I had to drill it out. Does anyone happen to know what the specs are on that bolt? I know it takes a 2.5mm key to remove it, but that’s all I can find on it. Thanks in advance!

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**Author:** ![TMToronto](https://avatars.discourse-cdn.com/v4/letter/t/7ea924/32.png) [@TMToronto](https://forum.onefinitycnc.com/u/TMToronto)\
**Post date:** [October 27, 2024, 2:40am UTC](https://forum.onefinitycnc.com/t/stripped-hex-head-bolt-on-z-20-braking-motor/29081/2 "2024-10-27T02:40:23Z")

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The coupler uses an M3 screw.