This is an M8 split lock washer made for Leybold Sogevac vacuum pumps . It is a helical spring washer with a split design. Its job is simple. It stops nuts and bolts from coming loose when the pump runs and vibrates . This washer fits pump models including the SV40B, SV65B, SV100B, and SV40BI . It is an original quality replacement part. It replaces OEM part number 420056 and cross-references to X-WSH0021

This is an M6x16 shoulder bolt made for Leybold Sogevac vacuum pumps . A shoulder bolt is different from a regular bolt. It has a smooth, unthreaded middle section called the shoulder. This smooth section acts like a shaft or a pin. It allows other parts to rotate or slide smoothly. This bolt fits pump models including the SV28BI and SV300B . It replaces OEM part number 400069 and cross-references to L0683 .