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 5835-00-080-8213
NSN 7035-01-364-8454
NSN 6240-01-518-1595
NSN 6220-01-431-5755
NSN 5905-00-130-9128
NSN 5915-01-028-0237
NSN 5998-01-278-8801
NSN 5985-01-345-5397
NSN 5975-00-869-6480
NSN 5855-01-474-6820
NSN 5950-01-288-5184
NSN 5975-01-376-0426