im currently running my front end very low to the ground, but i can't raise it anymore, because the bottom adjuster bolt is knackered.. what is the size, and proper name for these bolts to i can get a new one?

it has a hex indentation on each end, like a bolt, but without a head.

Selecta drop's or sway away's.
We do them.

i've got a set.. just need one bolt so i have enough length in it to raise the car.

my cousin was using it in his bug B4 me, and it has been worn away :/

Sorry not sure what size but there called socket head cap screws...well mine are anyway...i know there a fine thread and metric.

Can you get the old thread out?

yeah i can get it out fine.. the thread itself is good, there just inst enough length left in it anymore, from being ground away on the road (my cousin's beetle was VERY LOW)

i just need to replace the bolt, but i don't want to drive to a bolt place, have to remove the bolt from the beam to check i have the right thing

That's what i was gonna suggest you do.
Suppliers have guides in printed form of bolt patterns and thickness.
Maybe grab one of these and take it home to pair it up against your old thread?
Still gotta drive but the bolt can stay in.