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 6105-01-203-4873
NSN 5985-00-195-9425
NSN 4140-01-212-3113
NSN 5996-01-569-6049
NSN 6685-01-552-6111
NSN 5835-01-150-6084
NSN 5950-01-089-6742
NSN 6110-00-542-2202
NSN 5835-00-841-2650
NSN 6650-01-585-6317
NSN 2925-01-027-1293
NSN 5905-01-414-8218