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 5990-00-234-0119
NSN 6645-00-960-6594
NSN 5945-00-815-2461
NSN 7035-01-067-4809
NSN 6320-00-036-3688
NSN 5950-00-021-5593
NSN 6685-01-660-0850
NSN 5996-00-466-7857
NSN 6130-01-552-6350
NSN 5895-01-135-5171
NSN 7035-01-150-6303
NSN 6105-01-500-0891