Road vehicles; screw-in injection nozzle holders, types 20, 21 and 27 for pintle nozzle size "S", type "B"

This technical specification addresses components used in road vehicles, specifically focusing on the design and requirements for spiral threaded nozzle holders. It covers types 20 and 21 of needle-type nozzles categorized under specification class B. The document outlines dimensional data, material properties, and performance criteria to ensure compatibility and safety within fuel delivery systems. It serves as a reference for manufacturers and engineers involved in the production of vehicle injection systems, aiming to harmonize technical parameters across the industry. By defining precise geometric and functional characteristics, the standard facilitates interoperability among various supply chain participants. The guidelines presented here support the consistent manufacturing of these essential engine components, contributing to reliable vehicle operation. Adherence to these technical provisions helps maintain uniformity in the design and assembly processes without imposing subjective assessments of the technology itself.