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 6685-01-337-1952
NSN 5996-01-113-7960
NSN 6650-01-100-9964
NSN 6220-01-216-5954
NSN 6685-00-527-9489
NSN 5855-01-275-5470
NSN 5990-01-411-5930
NSN 5855-01-199-2046
NSN 5945-00-856-3301
NSN 6135-00-932-3136
NSN 5920-00-216-8665
NSN 5910-01-215-4882