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 7035-01-644-3334
NSN 6620-00-310-4058
NSN 6145-01-573-1751
NSN 6685-01-092-8255
NSN 6645-01-428-3576
NSN 5945-00-063-0683
NSN 7035-00-679-9027
NSN 5925-00-085-1737
NSN 5910-01-243-3293
NSN 5930-01-026-0246
NSN 5990-00-548-6163
NSN 6240-01-648-5893