Rotary cutter castle nut 501110 1″-14 thread pack of 4

Rotary cutter castle nut 501110 is a replacement fastener for mounting blade discs to King Kutter rotary cutter gearboxes. This pack contains 4 nuts to keep spares on hand for maintenance and repairs.

The nuts measure approximately 55 x 31.8 mm and feature 1″-14 fine threading for reliable installation. The design eliminates the need for washers in modern applications, simplifying blade disc attachment to the gearbox.

Manufactured from quality metal, these castle nuts resist corrosion and maintain strength through extended use. The robust construction ensures consistent performance across lawn mower applications.

These nuts are compatible with King Kutter rotary cutters in 4′, 5′, 6′ and 7′ models, with power ratings from 40 to 60 horsepower. They work with both 3-point and pull-type hitch configurations, making them suitable for a wide range of agricultural equipment setups.

The castle nut design provides secure fastening with minimal maintenance once installed. The straightforward 1″-14 pitch thread ensures efficient fitting without repeated adjustments.

Check your rotary cutter gearbox specifications to confirm the 501110 size matches your equipment before purchasing.