Square nut; heavy
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 6650-01-444-2152
NSN 5999-01-512-2703
NSN 5835-01-346-9575
NSN 6150-01-222-0667
NSN 6220-01-451-1577
NSN 5835-01-090-0784
NSN 5960-00-587-7517
NSN 6220-01-267-4643
NSN 6135-01-468-6491
NSN 6645-00-155-2398
NSN 5950-01-312-7734
NSN 6105-01-273-0596