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 5930-01-500-1799
NSN 7035-00-437-7950
NSN 5835-00-034-4976
NSN 6135-01-400-2947
NSN 5998-01-500-2166
NSN 6685-00-473-0546
NSN 5965-00-529-0602
NSN 5985-01-398-6281
NSN 5855-01-338-1194
NSN 5895-00-081-2219
NSN 6645-00-412-5677
NSN 2925-01-157-9204