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.)
Classification: Nuts of iron or steel
NSN 4140-01-551-1992
NSN 6135-01-384-3915
NSN 5996-00-397-4318
NSN 5910-01-525-7719
NSN 5905-01-271-5286
NSN 5915-01-354-0294
NSN 5950-01-014-6238
NSN 2925-01-359-4027
NSN 6240-01-307-5094
NSN 6110-01-090-0417
NSN 5998-00-522-0671
NSN 6620-00-075-2179