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 5925-00-152-9399
NSN 5999-01-460-5236
NSN 6650-00-283-0978
NSN 5996-01-354-0502
NSN 5960-01-285-2152
NSN 6645-01-605-1485
NSN 6685-01-067-8474
NSN 6320-01-150-5378
NSN 2925-01-457-5649
NSN 2925-00-038-0596
NSN 6610-00-308-9034
NSN 6150-01-299-4529