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 6135-00-497-0491
NSN 4140-01-271-6960
NSN 6650-00-007-4372
NSN 5945-01-279-5658
NSN 5905-01-311-7646
NSN 5950-00-389-7139
NSN 5960-00-197-6282
NSN 5855-01-656-6808
NSN 5835-01-324-0089
NSN 5905-01-479-1655
NSN 5835-01-464-7038
NSN 6220-01-541-2154