Used on schottel of america bow thurster aboard 180 ft uscg vessels
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 6220-01-532-3903
NSN 6220-00-940-9752
NSN 5915-01-043-3231
NSN 6130-01-065-2368
NSN 5905-00-020-2846
NSN 6220-01-431-7915
NSN 5945-00-321-2043
NSN 5999-01-508-9710
NSN 5930-00-305-4861
NSN 5996-01-243-2765
NSN 5975-00-201-6306
NSN 5915-01-502-9659