Indent 3 places equally spaced one side only
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 5915-00-578-1917
NSN 2925-01-381-5307
NSN 6220-01-090-0126
NSN 5965-00-208-4896
NSN 6610-00-860-4222
NSN 5835-00-284-0882
NSN 6150-01-548-8437
NSN 5925-00-967-6199
NSN 7035-01-048-7122
NSN 2925-00-925-0545
NSN 5915-00-518-0851
NSN 6620-01-209-1472