Don't bolt them! (4)
I believe the answer is:
nuts
I'm afraid I can't even guess how this answer relates to the clue.
Can you help me to learn more?
(Other definitions for nuts that I've seen before include "deprived of one's wits" , "Fruit - bats" , "Eg, filberts, hazels" , "Delivers 24 [HEADBUTT]" , "Crazy; food" .)