A nut having 6 flat sides and an integral washer which extends beyond the flats or periphery.
Classification: Nuts of iron or steel
NSN 5999-01-631-1518
NSN 6130-01-517-8665
NSN 4140-01-531-0515
NSN 5855-01-197-2774
NSN 5925-00-307-4015
NSN 6650-00-675-1370
NSN 6220-01-571-2673
NSN 6145-00-156-4394
NSN 6645-00-150-6526
NSN 6685-00-255-3205
NSN 5975-00-978-0612
NSN 5855-00-797-8217