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 6110-01-453-6766
NSN 6220-00-900-4439
NSN 6220-01-202-4434
NSN 6110-01-025-1286
NSN 5985-01-442-5635
NSN 5915-00-170-6775
NSN 5905-01-211-4079
NSN 5915-01-485-9298
NSN 5930-01-378-6832
NSN 6650-01-643-0382
NSN 6610-01-543-5705
NSN 5985-01-167-8205