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 5960-01-528-1147
NSN 2925-01-650-3412
NSN 6135-01-408-9244
NSN 5996-00-618-0050
NSN 5895-00-563-1672
NSN 6650-01-040-3958
NSN 6685-00-292-9963
NSN 6220-01-312-2035
NSN 6135-01-041-3829
NSN 5930-00-256-8115
NSN 5999-01-197-7799
NSN 5910-01-608-3772