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.)
Classification: Nuts of iron or steel
NSN 4140-00-405-5285
NSN 5985-01-226-8171
NSN 6620-01-629-4045
NSN 6110-00-708-3832
NSN 6320-01-039-5891
NSN 6610-00-034-3709
NSN 6150-00-143-5396
NSN 6650-00-618-9398
NSN 6220-00-233-7436
NSN 6650-01-591-8574
NSN 6685-00-458-7555
NSN 5895-01-286-6825