Thread series is hf
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 5835-01-249-7393
NSN 5975-01-047-7597
NSN 5996-00-781-8993
NSN 5895-00-556-2149
NSN 7035-00-631-3782
NSN 5975-01-249-9120
NSN 5985-01-010-3741
NSN 5855-01-325-9507
NSN 6620-01-008-2715
NSN 6645-01-650-5735
NSN 6105-01-263-7234
NSN 5996-00-202-6576