Castle Nut 1.250"

1.250" Shaft - Bronze Heavy Hex Castle Nut

This bronze heavy hex castle nut is built for 1.250-inch inboard propeller shafts with a 7/8-9 NC right-hand thread. The larger thread size and robust hex profile are suited for higher-load shaft systems, allowing proper torque while maintaining secure engagement. The castellated design accommodates a cotter pin to mechanically lock the nut in place, reducing the risk of loosening during operation. Manufactured from marine-grade bronze, it provides excellent corrosion resistance and long-term reliability in shaft-drive marine applications.

Thread Size: 7/8"-9 NC-RH