Points of hexagon to have v shaped notch from 0.020 to 0.030 deep by 90.0 degrees
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 6240-00-080-2012
NSN 5996-01-570-0437
NSN 6110-01-422-2619
NSN 4140-01-023-1537
NSN 5895-01-326-2034
NSN 2925-00-201-8247
NSN 5999-01-560-5544
NSN 6150-01-191-7757
NSN 5905-00-056-4934
NSN 5855-01-591-7998
NSN 5975-01-550-6459
NSN 5835-01-071-6376