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 5895-00-969-4631
NSN 7035-01-597-1449
NSN 7035-00-153-3826
NSN 5905-00-229-8274
NSN 6685-00-257-2987
NSN 5998-01-535-8658
NSN 5998-00-554-9725
NSN 7035-00-541-8516
NSN 5965-01-160-7037
NSN 5915-01-530-4946
NSN 6320-00-908-6841
NSN 5915-00-917-7662