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 5935-01-025-0169
NSN 6105-01-512-2756
NSN 6685-01-302-2862
NSN 5905-00-865-5082
NSN 6645-01-595-1160
NSN 5925-01-044-5508
NSN 6240-01-472-5577
NSN 5990-01-061-5618
NSN 6105-01-603-5271
NSN 5975-01-605-9577
NSN 7035-01-314-7559
NSN 6145-01-100-7104