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 5965-00-156-8562
NSN 5905-00-926-0576
NSN 6220-00-872-7291
NSN 5985-01-246-9766
NSN 6620-01-412-7426
NSN 6645-01-399-1626
NSN 5985-00-517-0274
NSN 6145-00-198-5675
NSN 5910-01-094-6168
NSN 6220-01-534-6695
NSN 5945-00-275-0557
NSN 6320-01-582-0161