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Extended Washer Self-locking Nut NSN 5310-00-181-6821

Item Description

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.

NSN 5310-00-181-6821 NSN: 5310-00-181-6821

  Stock Availability

NSN 5310001816821 availability
(as of 10/31/2023).

  • NE: 5
  • NS: 6

Note: Availability of this item may have changed since it was last checked. Request a quote for an updated price and availability quote.

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  •   100% Product Inspections
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  •   On Time Delivery
  •   HAZMAT Certified
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Features and Characteristics

Thread Class
3b
Thread Direction
Right-hand
Locking Feature
Prevailing torque all metal design
Washer Outside Diameter
0.431 inches
Overall Height
Between 0.317 inches and 0.327 inches
Nut Style
Double hexagon
Washer Thickness
Between 0.047 inches and 0.057 inches
Width Across Flats
Between 0.306 inches and 0.315 inches
Thread Series
Unjf
Thready Qty Per Inch (tpi)
28
Thread Size
0.250 inches
Material
Iron alloy 660
Material Specification
Ams 5735 or ams 5737 assn standard single material response
Precious Material
Silver
Surface Treatment
Silver
Surface Treatment Specification
410, elastic stop nut corporation mfr ref single treatment response
FSC
5310 Nuts And Washers
NIIN
001816821
NSN
5310001816821

Manufacturer Part Numbers

Part numbers registered to this national stock number.
Part Number
Cage
Status
MSDS
Part Number:
6859746-428
Cage Code:
63005
Status:
A
MSDS:
Part Number:
SL7004C428
Cage Code:
71087
Status:
A
MSDS:
Part Number:
SL700C428
Cage Code:
11815
Status:
A
MSDS:

Foreign Trade & Schedule B

What is a Schedule B number? Find more information at help.cbp.gov
  • Schedule B Number: 7318160000
  • NAICS: 332722
  • SITC: 69421
  • Description: Nuts of iron or steel
  • End Use (Code 12300):
    Finished metal shapes

Q & A

Frequently asked questions for NSN 5310-00-181-6821
What are the manufacturers of nsn 5310001816821?
Does this nsn 5310001816821 have a shelf life?
No. This NSN does not have an applicable shelf life.
What is the formal definition of nsn 5310001816821
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.
Does nsn 5310001816821 contain any precious metals?
Item contains silver.
Does nsn 5310001816821 contain any hazardous materials?
No MSDS. No hazardous material.
What is the ESD classification of nsn 5310001816821?
No known electrostatic discharge.

Identification Group

Item Identification Guide (IIG) and Item Name Code (INC)
INC
FIIG
App. Key
Cond. Code
Status
INC:
29729
FIIG:
A021A0
App. Key:
BS
Cond. Code:
1
Status:
A

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