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 5935-01-429-0347
NSN 5925-00-703-3627
NSN 5985-01-351-5092
NSN 6620-00-438-5833
NSN 6105-00-166-9745
NSN 6150-01-367-6309
NSN 5910-00-094-6792
NSN 5905-01-423-8857
NSN 6240-00-061-3362
NSN 6320-00-731-6134
NSN 6220-00-264-9473
NSN 2925-01-535-7235