O.S. Locknut 1/4-M5 FS-52 SurpassTower Stock# OSMG2915 • Manufacturer Stock# 45810300
This is the lock nut that would be used when installing a Tru-Turn spinner on
High grade steel parts, and aluminum spinner collet.
1 steel prop washer
This lock nut set will also work with the O.S..40/.48 Surpass
NOTE: As far as we know this setup will only work with Tru-turn spinners.