SIGMA - Sigma 256NA8 Parts

Official parts catalog and replacement components documentation for the Sigma 105mm F2.8 Macro EX lens designed for Nikon AF camera bodies. This comprehensive technical reference manual serves as an essential guide for maintenance, repair, and component replacement operations. The catalog features detailed exploded view diagrams that illustrate the complete internal structure of the lens with precise numerical identification of each component. Organized parts lists provide official Sigma part numbers, bilingual parts nomenclature in Japanese and English, and quantity specifications for each assembly section. Documentation covers critical components including focusing cam mechanisms, front optical groups, front barrel assemblies, focus rings, scale rings, mounting screws, and various structural elements. An essential resource for optical technicians, authorized Sigma service centers, and professional lens repair specialists requiring accurate component identification and assembly information for performing repairs or sourcing replacement parts. Clearly illustrated schematics enable rapid component location and facilitate efficient parts ordering through official distribution channels.