Material:Iron steel
size:M6-M56 1/4-2-1/8
Grade:4.8-12.9 Gr2-Gr8
Finish:zinc plated
Standard:non-standard
Round nut continually with check dynamic gasket, assembling with within the gasket tongue insert the shaft, and the gasket groove outside of the tongue embedded round nut groove, nut is fastened. Often as rolling bearing axial fixation.