SELF-SANITISATION AGAINST BACTERIA AND FUNGI
Steel

Standard executions
Case-hardened steel (hardening depth 0.2 - 0.4 mm), hardness (550 + 100) HV 10:
- DIN 6319-C: convex washer.
- DIN 6319-D: concave washer with d3 = d2.
Hardened and tempered steel, hardness (350 +80) HV 30:
- DIN 6319-G: concave washer with d4 > d2.
Features and applications
DIN 6319 concave and convex washers are suitable for locking mechanical parts on non-parallel surfaces.