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 5935-01-202-6488
NSN 6320-01-551-3553
NSN 6135-00-900-2139
NSN 5990-00-644-3365
NSN 5960-00-651-9007
NSN 2925-01-171-6106
NSN 2925-01-271-8727
NSN 5985-00-759-4281
NSN 6105-01-474-6386
NSN 5935-01-415-7823
NSN 6620-00-218-4959
NSN 6240-01-325-3544