- Made of carbon steel, oxidized black finished, good rust and corrosion resistance.
- 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.
- Design with thread inside, 4-slot slotted round nut.
- Operated with hook spanners (not included here).
- Widely used for roller bearing, axial shaft, pump valve, etc.

Specification:
Material: Carbon Steel
Finish: Oxidized black
Thread Size: M18x1.5mm
Type: Fine Thread
Outer Diameter: 31mm / 1.22"
Height: 8mm / 0.31"

Package Content:
4 x Slotted Nuts