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 5930-01-237-0121
NSN 5996-01-520-8412
NSN 6685-00-203-4485
NSN 6220-00-842-6897
NSN 6130-00-231-3929
NSN 6610-01-434-2044
NSN 5930-01-422-1702
NSN 6610-01-426-5090
NSN 5930-01-153-0395
NSN 5945-00-584-2046
NSN 6145-01-558-8360
NSN 5910-00-196-0608