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 5950-00-573-8495
NSN 6135-00-432-8779
NSN 6130-00-510-4399
NSN 2925-01-159-0506
NSN 5920-01-360-4119
NSN 6150-01-394-0721
NSN 5975-00-889-5118
NSN 5855-01-366-2429
NSN 6110-00-180-4601
NSN 6105-01-377-6284
NSN 2925-01-559-5733
NSN 5910-01-423-1051