Fits boats with 1-1/4" shafts only.
NOT for 1" or 1-1/8" shafts! Only fits 1-1/4" - 7/8-9 thread
Nautique G-boats, some Malibu/Axis. Brass nut with nylon insert 7/8-9
Recommended over a castle nut, the Nylock Nut will cover the hole for the cotter pin.
Many of our customers have lost their propellers due to a failed cotter pin/castle nut combo!
Not with this Nylock Nut!