# M5 screws for steppers

**URL:** <https://community.inventables.com/t/m5-screws-for-steppers/20280>\
**Category:** Assembly\
**Created:** [February 18, 2016, 7:05pm UTC](https://community.inventables.com/t/m5-screws-for-steppers/20280 "2016-02-18T19:05:27Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![BradT](https://yyz1.discourse-cdn.com/flex009/user_avatar/community.inventables.com/bradt/32/15411_2.png) [@BradT](https://community.inventables.com/u/BradT)\
**Post date:** [February 18, 2016, 7:05pm UTC](https://community.inventables.com/t/m5-screws-for-steppers/20280/1 "2016-02-18T19:05:27Z")

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I’m getting the last few items in the BOM, and have a question.

The screws for mounting the stepper are M5s of three different lengths. Aside from aesthetics, is there any reason I couldn’t just use M5x20mm screws rather than all the individual sizes?

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**Author:** ![RickPeterson](https://yyz1.discourse-cdn.com/flex009/user_avatar/community.inventables.com/rickpeterson/32/67810_2.png) [@RickPeterson](https://community.inventables.com/u/RickPeterson)\
**Post date:** [February 18, 2016, 7:45pm UTC](https://community.inventables.com/t/m5-screws-for-steppers/20280/2 "2016-02-18T19:45:24Z")

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You might have interference issues with the X motor. If you use 20mm on the y motors you will have to run them the opposite direction or they will hit your idler pulleys and you may not be able to get a nut on them this way. IMHO it’s best to get the correct size screws and save yourself the headache.

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**Author:** ![BillArnold](https://yyz1.discourse-cdn.com/flex009/user_avatar/community.inventables.com/billarnold/32/48170_2.png) [@BillArnold](https://community.inventables.com/u/BillArnold)\
**Post date:** [February 18, 2016, 8:51pm UTC](https://community.inventables.com/t/m5-screws-for-steppers/20280/4 "2016-02-18T20:51:25Z")

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If you see a need to use a different length of bolt than supplied, check at Lowe’s or another hardware store. I was surprised to find a good assortment of metric bolts and nuts at our local Lowe’s when I wanted to add nylock nuts to some locations on my assembly.

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**Author:** ![BradT](https://yyz1.discourse-cdn.com/flex009/user_avatar/community.inventables.com/bradt/32/15411_2.png) [@BradT](https://community.inventables.com/u/BradT)\
**Post date:** [February 18, 2016, 9:15pm UTC](https://community.inventables.com/t/m5-screws-for-steppers/20280/5 "2016-02-18T21:15:39Z")

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Thanks guys. That’s exactly what I needed to know. Looks like I’ll be getting the proper sizes. 🙂

If there were no clearance issues I was just going to get a 100 pack of 20mm screws.