3/8" - 16 spinlock nut
A nut having 6 flat sides and an integral washer which extends beyond the flats or periphery.
NSN 6130-00-564-1230
NSN 5930-01-525-7226
NSN 5930-01-570-7791
NSN 5945-00-315-8377
NSN 4140-01-058-6603
NSN 7035-01-132-7209
NSN 5925-00-529-0441
NSN 6105-01-345-4265
NSN 5985-01-642-0201
NSN 5945-00-045-6255
NSN 5965-00-826-1841
NSN 5895-00-736-4624