Nacra Spreader Bar Screw (Coarse Threads)

Murrays Part# 56-9851-1

Clear anodized, course-threaded diamond wire spreader bar adjustment screw for Nacra and Prindle catamarans. Fits older boats with coarse threads. Newer boats used the same part number for fine threads. The -1 added to the PN is for the coarse threaded bar and end. 
Common on 6.0 NA boats. 

Use FWD spreader bar 56-9921.