Fastener makes reporters disturb dust (5,4)
I believe the answer is:
press stud
'fastener' is the definition.
(press stud is a kind of fastener)
'reporters disturb dust' is the wordplay.
'reporters' becomes 'press' (newspaper reporters).
'disturb' indicates anagramming the letters (I've seen 'disturbed' mean this (the order of letters is disturbed)).
'dust' with letters rearranged gives 'stud'.
'press'+'stud'='PRESS-STUD'
'makes' is the link.
(Other definitions for press stud that I've seen before include "Small fastener" , "Virile young editor, perhaps" , "catch!" , "one that can hold things together" , "It may secure clothing" .)