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 7035-01-204-7481
NSN 5996-01-202-9338
NSN 6220-01-467-4144
NSN 5925-00-998-1633
NSN 5905-00-081-6502
NSN 5996-01-552-7108
NSN 5925-01-339-3208
NSN 6145-01-384-8819
NSN 6150-00-925-5745
NSN 5905-01-475-9894
NSN 5985-01-219-4961
NSN 6105-01-020-3558