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 6620-01-254-7963
NSN 5999-01-519-2442
NSN 5915-01-169-9882
NSN 5985-00-285-0798
NSN 6650-01-498-8640
NSN 6135-00-112-8637
NSN 5965-00-393-1294
NSN 6110-01-351-4527
NSN 6150-01-149-1587
NSN 7035-01-086-2922
NSN 6220-01-391-4492
NSN 6150-00-681-1664