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 6130-01-463-6089
NSN 5998-00-016-7570
NSN 6130-00-196-2802
NSN 6320-01-021-6633
NSN 5915-01-157-1967
NSN 5925-00-290-4451
NSN 6685-00-918-2015
NSN 5996-00-278-5193
NSN 5905-01-456-9294
NSN 5925-01-649-6225
NSN 6130-01-619-7654
NSN 5999-00-115-3640