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Extended Washer Self-locking Nut

Model / MPN: SLN125-8 | NSN: 5310-01-456-2289
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
Sold in multiples of
1 EA
Thread Class
Thread Direction
Locking Feature
Prevailing torque all metal design
Washer Outside Diameter
0.950 inches
Dry film lubricant
Overall Height
0.675 inches
Nut Style
Double hexagon
Washer Thickness
0.040 inches
End Application
W/s: helicopter, apache, ah-64; ah-64-d longbow
Width Across Flats
Between 0.616 inches and 0.627 inches
Thread Series
Thready Qty Per Inch (tpi)
Thread Size
0.500 inches
Cobalt alloy
Surface Treatment Specification
Mil-c-8837 type 2 military specification single treatment response
Solicitation Description Qty UOM Close Date
SPE5E816T4161 Locking, Ex Nut, Self 2090 EA 01/14/2016
SPE5E817T3958 Locking, Ex Nut, Self 1936 EA 12/27/2016
SPE5E819T6976 Locking, Ex Nut, Self 3500 EA 03/01/2019
SPE5E820T0982 Locking, Ex Nut, Self 729 EA 10/28/2019
SPE5E820T5250 Locking, Ex Nut, Self 820 EA 02/10/2020
SPE5E020U0076 Locking, Ex Nut, Self 5795 EA 03/06/2020
SPE5E820T7625 Locking, Ex Nut, Self 3182 EA 03/30/2020
SPE5E121U0019 Locking, Ex Nut, Self 2831 EA 03/26/2021

Pricing and Availability

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SLN125-8 Cross Reference
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  • BH00685V8
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  • HS4133V8
  • BH00685V8
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  • HS4133V8