Self-locking nut M30x1.5 zinc plated

Technical specifications

Summary datasheet: RY-MB150121 / 90100024

This spare part is listed by SpareWash as a zinc-plated M30x1.5 self-locking ring nut or locknut. The page links SKU 90100024 to several brand references, including RY-MB150121 for RYKO/FIA29, as well as Aquarama, Ceccato and WashTec references.

Its expected function is to secure a threaded assembly and help reduce loosening caused by vibration or movement. The zinc-plated finish stated in the description provides basic surface protection against corrosion in machinery applications.

The page does not confirm that it is an original Ryko spare part; SpareWash presents it as interchangeable or compatible with the listed codes. There is also a discrepancy in the Ryko reference line, where it states “GHIERA 25 X 1,5” while the product title states M30x1.5.

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