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 5895-00-414-5212
NSN 6610-01-025-4718
NSN 5855-01-496-4265
NSN 6105-01-642-5246
NSN 6610-01-456-1166
NSN 6240-01-173-7809
NSN 5965-00-594-3115
NSN 5920-01-524-6264
NSN 5945-01-623-8871
NSN 5999-01-265-3853
NSN 5945-01-549-5466
NSN 6685-00-353-7893