Isx 2350 , metal shavings in the fuel filter

[T680]

I quit worrying for now about it cause it may come from the filters tread itself
I"ve seen the same small shavings like yesterday when I tried to replace the oil filter and this is the second fleet guard lube filter that I could not install at all, basically I throw it
I"ve spent more than 30 min trying to install it ,to no avail...after wiping the tread on the filter I"ve seen the same shavings size that looked the same to the ones I so when I dumped the fuel filter