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 6110-00-919-4637
NSN 5925-01-606-8674
NSN 5935-00-529-0407
NSN 5835-01-355-0308
NSN 6105-01-528-7557
NSN 5985-00-189-0953
NSN 5998-01-418-4684
NSN 5999-01-221-0593
NSN 6105-01-233-4466
NSN 6685-01-063-7425
NSN 2925-01-203-0493
NSN 6135-01-036-3495