LIFEPO4 Smoke and Fire Dept

MattiFin

Solar Addict
Joined
Dec 31, 2020
Messages
446
Which one exactly of these are are you referring to? https://www.mcmaster.com/disc-springs/
IIRC recommended torque for the M6 thread on the soft aluminium terminals was 4Nm.
4 Nm translates to 3.6kN clamping force on M6 thread (slightly lubricated thread)
3.6kN is approx 800lbf so the disk spring should be somewhere between 50% compression and 100% compression with that force.
Metric DIN 6796 standard washer would be obvious choice but these are too stiff for the extremely low toque the aluminium terminals are able to hande.
For example this looks suitable:
or this https://www.mcmaster.com/9713K412/
 
Top