IMAO spherical washer (upper and lower pair) Suitable bolt M20 BJ742-20001 1 pair

Catalog number: BJ742-20001 Features: ● Stable tightening is achieved without being affected by the parallelism of the workpiece, bolt, etc. Uses: ● As an adjustment washer when the mating part and the bolt seat do not fit closely together. Specifications: ● Suitable bolt: M20 ● Outer diameter (mm): 40 ● Inner diameter (mm): 21 ● Height (mm): 12 ● Spherical steel washer Material/Finish: ● Steel ● Treatment: Hardened and tempered, coated with black oxide Note: ● Shipping fee to Hokkaido and Okinawa is 1,500 yen