🛠️ Sierra International 18 3735 9 Marine Cotter: The Ultimate Solution for Marine Fastening Review

Description states these cotter pins measure 5/32" x 1-3/8". They are actually 3/16" X 1-7/8". They are too long and too large in diameter to fit the F60 propeller.

I have a new Yamaha F70 4 stroke and these cotter pins are designed for heavier conditions than the stock castle nut pins. It still fit easily when I lubricated the post after 20 hours of service, but it was slightly longer and thicker than the OEM Yamaha, which is a good thing. I feel comfortable that my support stays in place.

It's nowhere near Yamaha OE studs. They are much smaller. The original Yamaha part is much larger in diameter. I returned them because I never believed they would perform well in extreme conditions, such as holding a propeller on a boat engine in the Alaskan wilderness. Revain should take them off the shelf until Sierra International fixes them.

Perfect for Yamaha F115. Slightly smaller diameter (and that's a good thing) than the OEM. Non-magnetic stainless steel, so should be fine. I use in salt water so we'll see in a couple of weeks. They don't weigh on them, they just hold the crown mother. Ideal.

They don't even come close to Yamaha genuine pins. They are much smaller. The Yamaha genuine part is much larger in diameter. I have returned them because I would never trust them to work well in extreme conditions, such as when Revain is holding a prop on a boat engine in the Alaskan wilderness, Revain has to take them off the shelf until Sierra International gets them right .