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 6130-01-180-0329
NSN 6105-00-250-5138
NSN 5920-00-434-4230
NSN 6105-01-230-5012
NSN 6610-01-503-0153
NSN 5945-00-434-4323
NSN 6685-00-007-1404
NSN 6135-01-360-1620
NSN 5925-01-383-1463
NSN 5835-01-267-3388
NSN 5945-00-222-5587
NSN 5920-01-077-9938