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 6135-01-629-6940
NSN 5960-00-822-9519
NSN 4140-01-251-6797
NSN 6610-01-487-8879
NSN 6110-01-502-5617
NSN 6150-01-318-4469
NSN 5985-01-652-5270
NSN 6145-00-351-4539
NSN 7035-01-361-8821
NSN 2925-01-280-1911
NSN 6145-00-681-4417
NSN 6320-01-341-6130