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 6105-01-645-9402
NSN 6610-01-052-8029
NSN 7035-01-323-0164
NSN 6650-01-190-2304
NSN 6135-01-299-7252
NSN 5999-00-937-6974
NSN 6620-01-207-0667
NSN 5985-01-361-5569
NSN 5895-00-556-9162
NSN 5985-00-702-4034
NSN 6320-01-329-8380
NSN 5999-00-185-0748