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 5930-01-032-7474
NSN 5950-00-584-4571
NSN 5975-00-269-4365
NSN 7035-00-570-4100
NSN 5925-01-276-3749
NSN 5990-00-067-6791
NSN 7035-00-908-4933
NSN 5895-01-299-8916
NSN 6650-01-618-4046
NSN 6645-00-948-9763
NSN 5950-00-476-0815
NSN 5998-01-620-7622