DIAMETER: 0.500″+/-.004″
THICKNESS: 0.0394″+/-.0019″
PARALLELISM: 3 ARC MINUTES MAXIMUM.
FLATNESS: 10 WAVES/INCH MAXIMUM @ 633um, 2 FACES.
EDGE BEVEL: LIGHT PROTECTIVE BEVEL, 2 PLACES.
SURFACE FINISH: 20-10 PER MIL-PRF-13830, 2 FACES.
CLEAR APERTURE: CENTRAL 85% OF DIAMETER FACES.
MATERIAL TYPE/QUALITY: SAPPHIRE, CSI WHITE, HIGH
PURITY, VUV TREATED.
CRYSTALLOGRAPHIC ORIENTATION: (0001).
COATING: NONE, NOT REQUIRED.