For the leaded fuse holders on the screenshot how to you actually insert a 5mm fuse into 2 of these?
Were these IEC 60127 fuses?
If these were safety rated, modifying fuses in any way is not allowed.
You must not solder fuses, open them, rewire, paint, stick a radiator on, etc.
All that might change their characteristics and impair safety.
I'd say squeezing those in a vice is a modification that fuse manufacturer did not test for.
It is true some fuses come as leaded versions but these are not raw fuses with caps pressed in but separate products with separate testing and approvals as whole unit after it has been assembled. I'd say that chopping off leads from leaded version also qualifies as modification, even if you can technically squeeze that into a fuse holder.