Diameter: 3.500″+/-.002″
Thickness: 0.125″+/-.002″
Edge Bevel: 0.005″ / 0.010″ x 45degrees, Both Edges.
Parallelism: 3 Arc Minutes Maximum
Flatness: 10 Waves Per Inch Maximum @ 633nm, Both Faces
Surface Quality: 80-50 Per MIL-PRF-13830, Both Faces.
Material Type / Quality: Sapphire, Optical Grade.
Crystallographic Orientation: c-Plane
Coating: None, Not Required