Material is copper c2700
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 5975-00-752-2945
NSN 4140-00-804-0561
NSN 5996-01-320-1422
NSN 5950-01-655-2506
NSN 5950-00-376-2224
NSN 5965-01-055-7645
NSN 5965-01-426-8325
NSN 5895-01-537-2793
NSN 4140-01-510-1522
NSN 5975-01-018-9971
NSN 2925-01-307-2637
NSN 6135-01-494-8657