SCD1764-01A

DIAMETER: 0.250″+/-.001″
THICKNESS: 0.118″+/-.002″
PARALLELISM: 3 ARC MINUTES MAXIMUM.
FLATNESS: 5 WAVES MAXIMUM WITHIN CLEAR APERTURE,
2 FACES.
SURFACE FINISH: 80-50 PER MIL-O-13830, 2 FACES.
CLEAR APERTURE: CENTRAL 0.225″ MINIMUM DIAMETER,
2 FACES.
EDGE BEVEL: 0.005″/0.010″ X 45deg, 2 PLACES.
MATERIAL TYPE/QUALITY: SAPPHIRE, OPTICAL GRADE.
CRYSTALLOGRAPHIC ORIENTATION: (0001) NOMINAL.
COATING: NONE, NOT REQUIRED.