ID: 10.7 mm OD: 16.6 mm Thickness: 2.0 mm Steel type: EN 1.4404 (AISI 316L) or equivalent Threatment: Surface Hardened Surface coating: - Washer hardness: ≥ 520 HV0.5 Corrossion resistance: PREN 27** Bolt grades: Up to A4-80 Temperature range: -160°C to 500°C