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 5915-01-265-0862
NSN 5925-00-883-4441
NSN 5925-01-590-0171
NSN 6685-01-294-7505
NSN 5925-01-478-6783
NSN 5990-01-157-0441
NSN 5960-00-284-6150
NSN 5920-00-851-2846
NSN 6105-00-004-8962
NSN 5945-00-706-8508
NSN 2925-00-288-1394
NSN 5990-01-516-9665