DIAMETER: 1.000″+.000″/-.005″
THICKNESS: 0.020″+/-.002″
PARALLELISM: 10 ARC SECONDS MAXIMUM.
FLATNESS: 1/2 WAVE MAXIMUM @ 633nm, 2 FACES.
EDGE BEVEL: 0.005″ NOMINAL X 45deg, 2 PLACES.
SURFACE FINISH: 60-40 PER MIL-PRF-13830. 2 FACES.
CLEAR APERTURE: CENTRAL 85% OF DIAMETER FACES.
MATERIAL TYPE/QUALITY: SAPPHIRE, OPTICAL GRADE.
CRYSTALLOGRAPHIC ORIENTATION: m-PLANE
COATING: NONE, NOT REQUIRED.