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 5965-01-592-3051
NSN 5895-01-379-7192
NSN 5990-00-070-9608
NSN 5965-01-064-7496
NSN 5835-01-508-2528
NSN 5975-01-143-7753
NSN 5985-01-447-3043
NSN 6320-01-350-5570
NSN 6130-01-648-2672
NSN 5945-00-087-9067
NSN 6135-00-973-5632
NSN 6645-01-195-3329