DIN 509 — E — 06 x 02 │ │ │ │ Standard Form Radius Depth Family Type (0.6mm) (0.2mm)
WITHOUT UNDERCUT WITH DIN 509 E06x02 Mating Part Mating Part | | v v +-------+ +-------+ | | | | | X<--+-- Jammed here! | +---+ | ( | (Tool radius) | | | <-- Sits flush! ============== ================= Shaft Shoulder Shaft Shoulder \_/ <-- Undercut clearance din 509e06x02 exclusive
: Specifies a single-surface relief groove. Form E is typically selected for components where the face plane (shoulder) serves as the primary functional mating surface, but the adjacent cylindrical diameter does not require an additional recess. 06 (Radius DIN 509 — E — 06 x 02
Understanding the "Exclusive" Nature of DIN 509 E0.6x0.2 Undercuts in Precision Engineering It transitions cleanly between the cylindrical body and
= 0.6 mm) : The exact radius of the cutting edge profile. It transitions cleanly between the cylindrical body and the bottom of the groove to minimize micro-stress concentration. 0.2 (Depth
| Old DIN | Current ISO/EN | Notes | |---------|----------------|-------| | DIN 509E06X02 | ISO 2081 – Fe/Zn 6 / C (blue) | C = chromate passivation, blue | | Thickness 6 µm | Now often 5 or 8 µm standard | 6 µm is less common now | | X = single layer | Implicit in ISO 2081 | No undercoat |