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: Copper screws, nuts, bolts, rivets, and other fasteners not threaded
NSN 5960-01-391-8860
NSN 6150-00-635-3492
NSN 6320-01-267-0586
NSN 5996-00-754-4057
NSN 6320-01-113-7647
NSN 5985-00-862-1325
NSN 6620-01-034-1697
NSN 5996-00-846-3300
NSN 6135-00-998-5884
NSN 6645-00-715-1531
NSN 5990-00-932-3070
NSN 6150-01-224-4615