Blind Acorn Nut
US$0.62
Price when purchased online
Free shipping
Free 30-day returns
Sold and shipped by crescendo-finance.com
We aim to show you accurate product information. Manufacturers, suppliers and others provide what you see here.
US$0.62
Price when purchased online
Free shipping
Free 30-day returns
Sold and shipped by crescendo-finance.com
Free 30-day returns Details
Product details
| Management number | 248409150 | Release Date | 2026/09/03 | List Price | US$0.62 | Model Number | 248409150 | ||
|---|---|---|---|---|---|---|---|---|---|
| Category | |||||||||
Blind Acorn Nut, M8, Rancilio & Cross-Brand
Blind (acorn-style) hexagonal M8 nut, UNI 5721, used primarily on older Rancilio portafilters but cross-compatible with several other lever and grinder assemblies from other Italian machine brands.
SPECIFICATIONS
- Size: M8 blind hex nut
- Standard: UNI 5721
COMPATIBILITY
- Fits: Older Rancilio portafilters and lever/grinder assemblies, including the Z-9/Z-11 AT/ATS/ATF automatic group portafilter, MD40 grinder (shown as MR_196), MD50/MD80 grinder (position #13), and the S-20 group portafilter; also used on Pavoni lever brew groups (Bar/Bart/Pub/Hotel, group flange bolts) and Promac brew groups (Green/Compact/Club, portafilter)
- Replaces: Rancilio/Promac #37320800, Pavoni #4020177. Now superseded on current Rancilio builds by the R_419 fixing nut
INSTALLATION
Basic hand-tool hardware swap.
PRO TIPS
- If you are restoring an older lever machine, check whether your build uses this blind acorn nut or the newer open-style R_419 fixing nut before ordering, they are not visually identical, and the acorn nut fully caps the stud end.
Correction of product information
If you notice any omissions or errors in the product information on this page, please use the correction request form below.
Correction Request Form