Supply of bolts for construction (6)
I believe the answer is:
fabric
'for construction' is the definition.
(thesaurus)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for fabric that I've seen before include "(Texture of) cloth" , "Manufactured cloth" , "Cloth, woven material" , "Material; structure" , "Perhaps felt" .)