SCD2828-02B

DIAMETER: 3.000″+.000″/-.015″
THICKNESS: 0.118″+/-.002″
PARALLELISM: 20 ARC SECONDS MAXIMUM.
EDGE BEVEL: PROTECTIVE EDGE BREAK, 2 FACES.
TRANSMITTED WAVEFRONT ERROR: 1/4 WAVE MAXIMUM AT
0.633um.
SURFACE FINISH: 60-40 PER MIL-PRF-13830, 2 FACES.
CLEAR APERTURE: CENTRAL 80% OF THE DIAMETER.
MATERIAL TYPE/QUALITY: SAPPHIRE, OPTICAL GRADE.
CRYSTALLOGRAPHIC ORIENTATION: (0001) +/- 2deg.
COATING: NONE, NOT REQUIRED.