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 7035-00-079-7189
NSN 5910-00-663-5865
NSN 5945-01-364-1950
NSN 5930-00-265-5822
NSN 5915-00-067-7464
NSN 5910-01-454-7990
NSN 6150-00-753-3950
NSN 6240-01-190-3541
NSN 6145-01-368-0761
NSN 5975-01-345-2182
NSN 5915-00-173-5000
NSN 6645-01-430-4125