Shimano hub servicing issue with axle

PSA: Shimano road TA hub diagram slightly misleading - Bike Forums

Used in the Small Parts Category

SHIMANO Cycling Y2SW98020 Hb-M525-A Complete Hub Axle - Replacement Spare Part for Bike

Original Shimano parts guarantee that all components work perfectly for optimum performance and maximum safety and longevity.

SHIMANO FH-MT401-B Freehub For Disc Brake 12-Speed Rear Complete Hub Axle - Y3HW98020

How to service the hubs on your bike

Shimano Cassettes & Freehubs

Shimano hubs, what's the deal?

These are indicated as being an A match which indicates that the parts are identical. - Shimano Deore XT WH-M785-29 - Shimano Deore XT WH-M785 Can

SHIMANO Spare Part HBM785 Complete hub axle

Universal Cycles -- Shimano Hub Axle Cones/Locknuts

Freehubs explained: standards, compatibility and how a freehub works