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 6130-01-562-9437
NSN 5895-01-512-8827
NSN 5985-01-085-3747
NSN 6620-00-236-7148
NSN 5965-01-030-0108
NSN 6130-01-116-2571
NSN 5999-01-653-1611
NSN 5925-01-368-3389
NSN 6145-00-128-8698
NSN 5930-01-238-0718
NSN 6685-00-844-4606
NSN 6220-01-616-4492