DIAMETER: 0.993″+/-.003″
THICKNESS: 0.039″+/-.005″
PARALLELISM: NOT SPECIFIED.
FLATNESS: 1/10 WAVE MAXIMUM @ 633um, 2 FACES.
EDGE BEVEL: 0.005″/0.010″ X 45deg, 2 PLACES.
SURFACE FINISH: 20-10 PER MIL-PRF-13830, 2 FACES.
CLEAR APERTURE: CENTRAL 80% OF DIAMETER FACES.
MATERIAL TYPE/QUALITY: SAPPHIRE, OPTICAL GRADE.
CRYSTALLOGRAPHIC ORIENTATION: (0001).
COATING: NONE, NOT REQUIRED.