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 6105-01-010-5953
NSN 6145-01-177-6337
NSN 6620-00-643-1402
NSN 5950-01-584-4755
NSN 5975-00-345-1339
NSN 5985-01-070-7168
NSN 5985-01-152-6907
NSN 5915-00-003-3569
NSN 6130-01-605-7702
NSN 6620-00-952-4278
NSN 5998-01-049-4350
NSN 5999-01-339-9756