SIGMA - Sigma 432NA8 Parts

Official Sigma parts catalog for the Sigma 24mm F1.8 D EX DG Aspherical Macro lens (model 432-NA8), designed for Nikon AF camera bodies. This service manual provides detailed exploded-view diagrams with numbered component identification throughout the optical and mechanical assembly. The parts list presents every component with Sigma reference numbers, Japanese and English designations, and quantity requirements for accurate ordering and assembly work. Coverage includes the primary focus cam unit, focus gears and rollers, guide mechanisms, cover ring assembly, autofocus gear units, main circuit board assemblies, masking sheets, and lens hood components. Mount washer variants are cataloged across multiple thickness specifications—critical for precision shimming during repair and optical adjustment procedures. Cross-references and supplementary technical notes direct technicians to related documentation for components requiring additional context. An essential workshop reference for optical repair technicians, professional service centers, and lens restoration specialists needing precise parts identification and assembly guidance.