10-32 Thread.
Fits 3/16" Shafts.
Racers Choice Propeller Nut.
Quantity 5..
Nut Type: Smooth Flanged,,
Fastening Method: Self -Locking,,
Note:10-32 Nuts work on 3/16" Stubs,,,,1/4-28 works on full 1/4" Stubs.
Exception: 1/4" Reduced Stubs to 3/16" Use 10-32 Nuts.