DIAMETER: 6.20mm + 0.00mm /- 0.10mm
THICKNESS: 3.00mm +/- 0.05mm
PARALLELISM: 5 ARC MINUTES MAXIMUM.
EDGE BEVEL: LIGHT PROTECTIVE BEVEL, 2 PLACES.
FLATNESS: NOT SPECIFIED.
SURFACE FINISH: 60-40 PER MIL-PRF-13830, 2 FACES.
MATERIAL TYPE/QUALITY: SAPPHIRE, OPTICAL GRADE.
CRYSTALLOGRAPHIC ORIENTATION: c-PLANE
COATING: NONE, NOT REQUIRED.