A comparatively flat rigid item, having a centrally located aperture, designed to hold a window in position in mechanical or optical instruments. It must have drilled and/or tapped holes for mounting purposes.
Classification: Other base metal mountings, fittings etc, nesoi
NSN 6240-00-299-9819
NSN 5996-00-191-0396
NSN 5915-01-245-3403
NSN 2925-00-646-6099
NSN 6620-01-399-3615
NSN 5996-01-103-9092
NSN 5895-00-239-9138
NSN 5998-00-940-9744
NSN 6610-00-641-3015
NSN 5855-00-472-2055
NSN 5895-00-539-8322
NSN 5910-01-168-0964