Fanatics with arrows getting essentials (4,3,5)
I believe the answer is:
nuts and bolts
'essentials' is the definition.
(I've seen this in another clue)
'fanatics with arrows' is the wordplay.
'fanatics' becomes 'nuts' (nut can mean an enthusiast or fanatic).
'with' becomes 'and'.
'arrows' becomes 'bolts' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'nuts'+'and'+'bolts'='NUTS AND BOLTS'
'getting' acts as a link.
Can you help me to learn more?
(Other definitions for nuts and bolts that I've seen before include "Means of securing" , "brass tacks?" , "DDessentials of the ironmonger's trade?" , "Basic practical details" , "A hardware shop should have them" .)