Blind Acorn Nut
US$0.62
Price when purchased online
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Sold and shipped by geschichtsverein.bludenz.at
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US$0.62
Price when purchased online
Free shipping
Free 30-day returns
Sold and shipped by geschichtsverein.bludenz.at
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 Now superseded on current Rancilio builds by the R_419 fixing nut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.
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