Pop rivets or machine screws

[2bTom]

Just a quick question can I use M4 screws with max strength thread locker to fix cable tie saddles to the chassis or do I need to use pop rivets for the IVA? Reason I am asking is that if you have to remove a rivet the back of it just drops in to the chassis and it just rattles with no way to get it out so for that reason I don’t like to use rivets.

[nelmo]

I doubt IVA is that specific - there was definitely no mention when I did mine.

I wouldn't worry about rattling bits of rivet - you're never going to hear it above wind/engine/tyre noise. I assume you mean self-tappers? They'll be a pain to remove if you need to and difficult to re-use the same hole.

[IanS]

Self drilling bolts can be reused a few times. Need a power screwdriver / drill to drive. Lite duty ones good for up to 5mm steel, heavy duty for up to 12mm steel.

https://www.datapowertools.co.uk/ProductGrp/Self_Drilling_TEK_Screws_For_Heavy_Duty_Section_Steel

[2bTom]

Thanks for the answers. I am using M4 screws, so drill and tap the chassis and use thread locker. But before I carry on I thought to check what others think.

https://www.ebay.co.uk/itm/360526342550?hash=item53f10b6996:g:~WUAAOSw2~Zb1D8-&amdata=enc%3AAQAHAAAA0BYiHdoFPRtIjXoUDLcBAFxbgZLAg6UcTvcOBJHmPG53rrLNVNm7A3HZPAqCgnEDXQN7qpRjd7xBzqxoX%2BDK8W6M1fdsii2ImrywLGKjnfsk%2BAtUsSuEWK88PwOQdkA1hdUkJ5%2F6za457J3BVFUlrjPZ5a52AqJsQdtLc3fGrJ6mrVRxXN7Xg8%2B0ZE4In1czaLBEXl0tu%2B5W8vuRpSeI21e665zWT4qQLs%2FiNo%2Fyshz4oUodcr9fhojSV0paaY9%2FTPq9lyMCToYW0%2F8DgrhBiLg%3D|tkp%3ABk9SR7TStqPfYQ

and

https://www.amazon.co.uk/Sealey-SCS271S-Stud-Lock-Strength/dp/B01MUWG7ZE/ref=sr_1_3?crid=XN0TBE53MBEP&keywords=sealey+thread+lock&qid=1679261071&sprefix=sealy+thread+lock%2Caps%2C68&sr=8-3

[IanS]

If you use stud lock with pozi A2 screws do not expect to remove the screw without either drilling or a fair bit of heat.

Do you realy need stud lock suerly a lower strength thread lock like loctight 222 will be more than enough.

Before I retired we used 222 on many very high vibration machine tools that we made without problems, just clean oil off before applying the thread lock.

[2bTom]

Thanks Ian I have some 243 thread lock so I will use that instead.