Catches with spikes (5)
I believe the answer is:
nails
I believe this is a double definition.
'catches' is the first definition.
(I've seen this in another clue)
'spikes' is the second definition.
'with' is the link.
(Other definitions for nails that I've seen before include "Metal fasteners" , "measure of hardness?" , "Fixing spikes" , "Horny plates of the digits" , "Fastens with spikes" .)