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1/2-20 King Pin Slotted Jam Nut (Castle Nut)
50FNSJ5 ½-20 Slotted Jam Nut (Castle Nut)
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1/2-20 King Pin Slotted Jam Nut (Castle Nut)

Part Number: 50FNSJ5
Online Price: $2.99
Availability: In Stock.

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50FNSJ5 1/2-20 Slotted Jam Nut (Castle Nut) is used in the plate where a cotter pin is needed to secure the nut from backing out. 

Castle Nuts are commonly used in the kart or racing chassis as part of safety tech. They are secured with either cotter pins, R-clips, or safety wire in cases where a critical component like a header or wheel hub could detach from the engine or chassis and injure a driver or spectator. 

This castle nut is used on the spindle kingpin for racing go-karts, lawnmowers, and other components with 1/2-20 thread. 

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