A nut having 6 flat sides and an integral washer which extends beyond the flats or periphery.
Classification: Copper screws, nuts, bolts, rivets, and other fasteners not threaded
NSN 4140-01-190-8617
NSN 6645-01-303-5855
NSN 5998-01-464-0624
NSN 6105-01-606-2140
NSN 5985-00-843-5050
NSN 5925-00-010-7490
NSN 5945-00-794-9094
NSN 6130-00-639-0666
NSN 6685-00-978-8608
NSN 6240-01-406-3589
NSN 5975-01-384-4446
NSN 6645-00-787-2673