[Features] ●Combines a spherical washer and a conical seat. ●Used when the bolt and the bearing surface are not perpendicular. ●Always make full use of its functions. ●Assembly and installation are easy and rational. ● Inventory management is easy. ● Corrects the angle of the bottom up to about 4 degrees.
[Use] ● For fixing bolts on inclined surfaces such as castings and straps.