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 5975-01-478-2515
NSN 5915-01-215-1473
NSN 6685-00-963-8546
NSN 5915-00-351-7355
NSN 5895-01-535-4916
NSN 5950-00-569-9961
NSN 5990-00-226-1152
NSN 6135-01-265-1384
NSN 5990-00-163-4173
NSN 5855-01-406-4821
NSN 5925-01-578-0727
NSN 5996-01-100-6057