PP-11-35921 Mercury Pinion Nut
Thread: 5/8" (15.9 mm) - 18 threads | Spanner Size: 1 1/16"

Fits Mercury:
• 30–60HP – 3 & 4-cyl 4-stroke; Carb, EFI, BigFoot, Jet
• 65–80HP – 3-cyl 2-stroke & 4-cyl EFI; Jet drive...