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 6130-01-268-0524
NSN 6620-00-832-2556
NSN 5996-01-116-1087
NSN 5965-00-400-6228
NSN 5895-01-050-2023
NSN 6645-00-950-3418
NSN 6145-01-211-9352
NSN 6130-01-132-3756
NSN 6320-01-421-6355
NSN 6320-01-397-9995
NSN 5905-01-451-0572
NSN 6150-01-294-5595