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 2925-01-110-1467
NSN 6105-01-240-5735
NSN 5855-00-791-5000
NSN 6645-01-521-3180
NSN 6650-00-590-9073
NSN 5920-01-426-8517
NSN 5945-01-309-6050
NSN 6320-01-425-1417
NSN 6135-00-951-3426
NSN 6685-00-468-5887
NSN 4140-01-377-5828
NSN 6220-00-034-7280