【MATERIAL】- Made of carbon steel, oxidized black finished, good rust and corrosion resistance
【FEATURE】- Design with thread inside, 4-slot slotted round nut
【ADVANTAGE】- The pitch and spiral angle of the fine thread is smaller, which is more conducive to the self-locking, so the fine thread are generally used in places where it is necessary to prevent loosening
【APPLICATION】- Widely used for roller bearing, axial shaft, pump valve, etc