PAdb 5.0 Wheel Hub Attribute Coverage and Null-Value Review
Confirm the current PCdb terminology and PAdb publication first, because attribute applicability depends on product classification and version. For every expected wheel hub attribute, preserve the source value, unit, method or document, revision and product identity. Normalize only through documented conversions, and keep not applicable, unknown, conflicting and intentionally omitted states separate. Check controlled values and receiver rules against the current specification, then compare the imported product page or API with the approved source record. Never infer a dimension, material, sensor feature or performance value from a photograph or adjacent SKU.