MAJOR DIAMETER: 65.00mm + 0.00mm /- 0.10mm
MINOR DIAMETER: 55.00mm +/- 0.05mm
OVERALL THICKNESS: 8.00mm +/- 0.20mm
MAJOR DIAMETER THICKNESS: 4.00mm +/- 0.10mm
PARALLELISM: 0.001″/INCH MAXIMUM T.I.R.
CONCENTRICITY: DIAMETERS WITHIN 0.002″.
EDGE BEVEL: LIGHT PROTECTVE BEVEL, 3 PLACES.
SURFACE ACCURACY: 5 WAVES MAXIMUM WITH CLEAR
APERTURE, 2 FACES.
SURFACE QUALITY: 60-40 PER MIL-PRF-13830, 2 FACES.
CLEAR APERTURE: CENTRAL 44.00mm MINIMUM DIAMETER,
2 FACES.
MATERIAL TYPE/QUALITY: SAPPHIRE, OPTICAL GRADE.
CRYSTALLOGRAPHIC ORIENTATION: RANDOM.
COATING: NONE, NOT REQUIRED.