Design with thread inside, 4-slot slotted round nut. Operated with hook spanners (not included here).
Used widely for roller bearing, axial shaft, pump valve, etc.
Tags:$0 - $20,Fasteners,Hardware,Nails,Nut & Bolt Assortment Sets,Nut & Bolt Sets,Nuts,Screws & Fasteners,Thumb Nuts
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