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 6685-00-105-9896
NSN 5990-00-230-5352
NSN 5950-00-987-7187
NSN 4140-00-943-7434
NSN 5905-01-330-9188
NSN 5910-01-431-9690
NSN 5920-01-408-3508
NSN 6645-01-252-6708
NSN 6650-01-418-8681
NSN 5999-01-421-9433
NSN 5925-00-800-5350
NSN 5925-01-095-9990