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 5915-00-398-0677
NSN 6135-00-221-4720
NSN 5920-01-123-9854
NSN 6610-00-425-7684
NSN 2925-00-149-0760
NSN 6135-01-623-6992
NSN 5910-01-364-5191
NSN 5996-00-577-0483
NSN 6220-00-244-2040
NSN 5905-01-057-4970
NSN 6685-00-079-0313
NSN 5930-01-482-3110