Item is called a prevailing torque type hexagon thin nut w/non-metallic insert
A nut having a flat bottom and 6 sides. An integral feature is incorporated for locking on the threads of a mating member. Excludes nut (1), self-locking, cap.
Classification: Nuts of iron or steel
NSN 6110-01-160-9444
NSN 5835-01-332-2867
NSN 6145-01-254-8502
NSN 5910-00-862-0145
NSN 6105-01-296-6179
NSN 6685-00-647-3883
NSN 5996-01-250-5567
NSN 5945-01-025-0368
NSN 6620-01-332-0623
NSN 5998-01-036-7236
NSN 5925-00-064-2188
NSN 6645-00-276-7544