hard to tell without a photo but most likey it is to fix the spreader
from moving. most offten if you wnat the spreders not rotate forward
you use that hole to keep them form rotating
:: Each wing of my shroud spreader has 2 small holes. The :: larger hole, farthest from the mast, has a small :: bolt/nut. Can you tell me what is supposed to be in the :: smaller hole nearest the mast? :: :: Thanks for your help, and also please send response to :: firstname.lastname@example.org.