CONFIGURATION: SQUARE PLATE, STEPPED FACES,
THRU-HOLES, PLANE-PARALLEL.
MAJOR FACE LENGTH: 1.750″+/-.005″
MAJOR FACE WIDTH: 1.750″+/-.005″
MINOR FACE LENGTH: 0.875″+/-.005″
MINOR FACE WIDTH: 0.750″+/-.005″
OVERALL THICKNESS: 0.750″+/-.005″
MAJOR FACE THICKNESS: 0.375″+/-.005″
MINOR FACE HEIGHT: 0.375″ REF.ONLY
PARALLELISM: 0.005″ MAXIMUM T.I.R.
CORNER BEVELS: 0.0157″+/-.0039″ X 45deg, 8 PLACES.
EDGE BEVELS: LIGHT PROTECTIVE BEVEL, ALL EDGES.
THRU-HOLE SIZE: 0.173″+.005″/-.000″, 8 PLACES.
THRU-HOLE LOCATIONS: SEE DRAWING.
THRU-HOLE CONTERSINK: 0.0157″+/-.0039″ 8 PLACES.
SURFACE FINISH: 80-50 PER MIL-PRF-13830, 2 FACES.
MATERIAL TYPE/QUALITY: SAPPHIRE, OPTICAL GRADE.
CRYSTALLOGRAPHIC ORIENTATION: a-PLANE or m-PLANE
WITH C-AXIS ALLIGNED TO EDGES PER DRAWING.