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 5915-00-983-9742
NSN 7035-01-396-3343
NSN 4140-00-211-5970
NSN 6110-01-368-7837
NSN 6145-01-470-7164
NSN 5965-01-361-4565
NSN 5950-00-278-1201
NSN 5925-01-464-9067
NSN 6220-01-465-9283
NSN 5895-01-009-9225
NSN 6685-01-410-7583
NSN 5905-00-266-0975