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Worldwide distributor of NSN parts and consumables located in the USA.

Extended Washer Self-locking Nut

Model / MPN: 64740 | NSN: 5310-00-980-3891
ITAR Registered seal

A nut having 12 drive points, 24 sides, and an integral washer which extends beyond the points or periphery. An integral feature is incorporated for locking on the threads of a mating member.

Product Details
NATO Stock Number
5310-00-980-3891
Sold in multiples of
EA
DEMIL
NO
Thread Class
3b
Thread Direction
Right-hand
Locking Feature
Prevailing torque all metal design
Washer Outside Diameter
Between 0.580 inches and 0.600 inches
Overall Height
Between 0.456 inches and 0.471 inches
Nut Style
Double hexagon
Washer Thickness
Between 0.230 inches and 0.240 inches
Width Across Flats
Between 0.367 inches and 0.376 inches
Thread Series
Unf
Thready Qty Per Inch (tpi)
28
Thread Size
0.250 inches
Part Name Assigned By Controlling Agency
Navy special project
Material
Iron alloy 660
Material Specification
Ams 5735 assn standard single material response
Precious Material
Silver
Surface Treatment
Silver
64740 Series Parts

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64740 Cross Reference
  • 529263
  • 64740-428
  • 529263