2pcs 3/4 -16 NF TPI RH RIGHT HAND Threads per inch Hex Nut Castle Split Threaded

Description

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Item ....................... Qty.2 NUTS per bid even though there is
only one in the photo.
Manufacturer ....... Unknown
Size ......................... 3/4" - 16 TPI
Hex size  ................ 1-1/16" wrench / socket is needed
Grade  .................... Not listed on the nut
Condition ............... New old stock with split top like castle nuts but smaller, maybe it acts like a locking nut? Not sure what these splits are for but I bet someone out there does. Dusty from shelf time and a few have some light corrosion starting, nothing serious