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 6135-01-475-0162
NSN 6685-01-263-2251
NSN 6220-01-250-9308
NSN 2925-01-648-6859
NSN 5990-00-845-2864
NSN 6105-01-231-5450
NSN 5920-01-369-8588
NSN 6130-01-232-1766
NSN 5915-01-433-4216
NSN 5996-01-554-2463
NSN 6145-01-581-6020
NSN 5935-01-343-1299