Dyed blue federal standard 595 no. 15123
No other part numbers with same form, fit, and function found.
A nut having a flat bearing surface and 6 flat sides with slots in its upper portion. An integral feature is incorporated for locking on the threads of a mating member. The slots, when used in conjunction with a solid or split (cotter) pin, act as an extra "fail safe", feature in critical applications. Excludes nut (1), self-locking, castellated, octagon.
Classification: Nuts of iron or steel
NSN 6620-01-527-9798
NSN 5835-00-617-3578
NSN 5965-01-172-5724
NSN 5960-01-311-2170
NSN 6610-01-098-8363
NSN 6145-00-894-3434
NSN 6320-00-823-2015
NSN 5855-01-199-2046
NSN 6240-01-244-6353
NSN 5835-00-173-4456
NSN 6145-01-474-8333
NSN 6320-00-270-8222