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 6685-01-604-9278
NSN 6320-01-064-0372
NSN 6240-00-013-1282
NSN 7035-00-312-3055
NSN 5905-01-429-7513
NSN 6320-01-021-6633
NSN 5925-00-194-9146
NSN 5985-01-098-5321
NSN 6610-01-474-8520
NSN 5925-00-596-2146
NSN 5990-01-411-5930
NSN 5945-01-098-5170