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 5930-01-172-4301
NSN 5999-01-341-2363
NSN 6130-01-258-5330
NSN 6130-00-525-9271
NSN 6320-01-261-5983
NSN 6685-00-258-2257
NSN 6620-01-352-5640
NSN 5945-01-411-9732
NSN 5930-00-325-4465
NSN 5915-01-583-8079
NSN 6320-01-129-9656
NSN 6220-01-575-0043