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 5975-01-497-8183
NSN 6135-00-100-0485
NSN 6105-00-295-1704
NSN 5975-01-198-9916
NSN 6105-01-542-9995
NSN 6685-00-757-8925
NSN 6130-01-166-7054
NSN 5996-01-152-7396
NSN 5835-00-778-5761
NSN 7035-01-578-6232
NSN 6135-01-040-1446
NSN 6110-01-187-0603