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.)
NSN 5855-01-040-9233
NSN 7035-01-064-8212
NSN 5895-01-589-0366
NSN 6240-01-530-7485
NSN 5985-00-916-8294
NSN 6110-00-938-6790
NSN 6150-01-412-8287
NSN 5895-00-516-9357
NSN 2925-00-132-1280
NSN 5925-01-506-5306
NSN 5925-01-013-4432
NSN 6685-01-296-9941