Design mil-dtl-01222 type iii style a or b
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 5835-00-922-1263
NSN 6320-00-593-0379
NSN 5999-00-414-3343
NSN 5950-00-301-4497
NSN 5920-00-357-0260
NSN 6320-00-931-4855
NSN 5996-00-229-7037
NSN 6105-01-313-8150
NSN 5895-01-164-9599
NSN 5905-01-281-1801
NSN 5910-00-910-5114
NSN 6240-00-518-3541