CONFIGURATION: DISC, STEPPED, PLANO/CONCAVE
MAJOR DIAMETER: 0.920″+/-.005″
MINOR DIAMETER: 0.800″+/-.002″ AT BASE OF 10deg
MINOR DIAMETER TAPER: 10 DEGREES +/- 1/4 DEGREE.
OVERALL THICKNESS: 0.165″+/-.005″
MAJOR DIAMETER THICKNESS: 0.100″+/-.005″
CENTER THICKNESS: 0.040″+/-.005″
EDGE BEVELS: MAJ.DIA.TOP: 0.015″+/-.005″ X 45deg.
MAJ.DIA.BOT: 0.015″+/-.005″ X 52.5deg
MINOR DIA: 0.0125″+/-.0025″ X
CONCAVE RADIUS: 0.600″+/-.005″
CONCAVE RADIUS LAND DIA.FACE: 0.740″+/-.005″
CONCAVE ANNULAR RING/FLAT: 0.002″/0.005″WIDE
SURFACE FINISH: OD AND BOTTOM BEVEL: POLISHED.
FACES: OPTICALLY POLISHED 20-10.
ALL OTHER SURFACES: FINE GROUND.
MATERIAL TYPE/QUALITY: SAPPHIRE, HEMLUX or EQUIV.
CRYSTALLOGRAPHIC ORIENTATION: (0001).
COATING: NONE, NOT REQUIRED.