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 5905-00-222-9207
NSN 5975-00-171-1344
NSN 6645-01-025-1002
NSN 5895-00-852-4237
NSN 6150-01-043-5202
NSN 6645-01-322-8897
NSN 5990-01-217-1550
NSN 6610-01-426-5090
NSN 6650-01-569-6982
NSN 7035-00-529-3128
NSN 5925-00-840-4149
NSN 6150-01-634-0575