Abnormal pieces, with tons for scrap (7)
I believe the answer is:
oddment
'scrap' is the definition.
('oddment' can be a synonym of 'scrap')
'abnormal pieces with tons' is the wordplay.
'abnormal' becomes 'odd' (I've seen this before).
'pieces' becomes 'men' ('man' can be a synonym of 'piece'**).
'with' is a charade indicator (letters next to each other).
'tons' becomes 't'.
'odd'+'men'+'t'='ODDMENT'
'for' is the link.
(Other definitions for oddment that I've seen before include "Remnant" , "a bit spare" , "One of a broken set" , "Just a bit left" , "Leftover item" .)