Naldoni e Biondi NBFS00000020 is a U-shaped weldable fork for hydraulic-cylinder fabrication, documented in steel S235JR. Its two parallel ears have a 20.25 mm pin bore A and a 20 mm internal fork opening G. H is the square base size, B the overall height, C the base-to-bore-centre distance and E the top-to-bore-centre distance. D is retained with its original catalogue drawing label.
The exact complete article number is printed in the NBFS manufacturer table and in the selected supplier manufacturer-article-number field. The selected supplier stock-model row NRV20H0000 agrees with the original dimensions and mass. The supplier brand is blank (--), so this independently observed offer supports the article designation without authenticating the supplied unit as Naldoni.
This is the weldable NBFS fork, not the adjacent NBFFIL threaded fork or a single-eye NBAFSF terminal. No structural load, fatigue, pin-fit tolerance, welding procedure or cylinder pressure rating is inferred from the parts table. The genuine supplier photograph is shared across sizes and is representative; it does not establish dimensions, material grade, finish or exact supplied revision.
