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 5975-00-681-1193
NSN 5855-00-688-9954
NSN 6620-01-265-2887
NSN 5998-00-171-8941
NSN 5895-01-354-0790
NSN 6620-01-122-0238
NSN 5985-00-838-8454
NSN 6145-00-338-5645
NSN 5910-00-952-6437
NSN 5996-01-571-1450
NSN 5930-00-778-5745
NSN 5999-01-534-1424