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 5855-00-114-4954
NSN 6650-01-196-4667
NSN 6135-00-334-4500
NSN 2925-00-839-6815
NSN 4140-01-642-2272
NSN 6610-01-483-1317
NSN 5910-01-571-3855
NSN 6105-01-474-5246
NSN 6685-01-417-3568
NSN 5975-00-514-3340
NSN 5925-00-079-7401
NSN 5990-01-395-4194