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 5935-01-415-3906
NSN 5910-00-060-0544
NSN 6685-01-112-0524
NSN 6620-01-556-9512
NSN 6135-00-500-2082
NSN 5930-00-837-7001
NSN 5945-01-521-3553
NSN 6145-00-343-5967
NSN 5920-00-865-3382
NSN 6320-01-512-2031
NSN 2925-00-139-8309
NSN 7035-01-019-5729