Membrane vent backing nut
A nut, flat on top and bottom having 6 flat sides. For items which have internal tapered or straight (parallel) pipe threads, specific electrical conduit size designation, and which when installed, provide a method of tightening to lock the connection, see locknut, electrical conduit. See also locknut, tube fitting. For items having a thickness (or height) exceeding two times the width across the flats, use post, electrical-mechanical equipment. (when height or thickness and/or width across the flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.)
Classification: Articles of plastics & articles of other materials of heading 3901 to 3914, nesoi
NSN 6105-01-245-7672
NSN 6650-01-619-9986
NSN 5930-00-607-8581
NSN 6320-01-487-0336
NSN 6105-01-617-5860
NSN 5999-01-359-1973
NSN 6135-00-299-6918
NSN 6130-01-595-2045
NSN 5835-01-527-2629
NSN 5855-01-631-2118
NSN 4140-01-291-8311
NSN 6145-01-085-6249