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 2925-00-785-9328
NSN 5855-00-879-7245
NSN 5935-01-439-0611
NSN 6610-01-066-4664
NSN 5990-01-512-9129
NSN 5996-00-784-7912
NSN 5998-01-435-9064
NSN 5985-01-174-5256
NSN 5950-00-819-0782
NSN 6135-00-269-5843
NSN 7035-00-275-5604
NSN 6220-01-376-5920