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 6105-01-234-2765
NSN 6645-00-991-0877
NSN 5910-00-351-2944
NSN 6105-01-502-0352
NSN 2925-00-168-2287
NSN 5990-00-763-5526
NSN 5855-00-013-1244
NSN 6135-01-017-3001
NSN 6220-01-377-9133
NSN 5990-01-485-0260
NSN 5930-00-132-6901
NSN 5930-01-041-2667