Diameter: 0.250″+/-.002″
Thickness: 0.020″+/-.002″
Parallelism: 0.001″ / Inch Maximum T.T.V.
Edge Bevel: None, Not Allowed
Flatness: 10 Waves / Inch Maximum @ 633nm, Both Faces
Surface Finish: 80-50 Per MIL-PRF-13830, Both Faces
Material Type / Quality: Sapphire, Optical Grade
Crystallographic Orientation: Random
Coating: None, Not Required