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 5930-00-119-9120
NSN 6220-01-032-5646
NSN 6240-00-137-2498
NSN 6610-01-368-7150
NSN 6130-01-587-5044
NSN 5855-00-079-2370
NSN 6320-00-681-1324
NSN 2925-00-992-2566
NSN 6685-01-511-0977
NSN 5855-01-441-3189
NSN 5925-01-190-9102
NSN 5985-00-962-1790