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Hexagon Extended Washer Self-locking Nut

NSN: 5310-00-224-0471 | Model: NAS1291-9
ITAR Registered seal

A nut having 6 flat sides and an integral washer which extends beyond the flats or periphery. An integral feature is incorporated for locking on the threads of a mating member.

NSN Properties and Flags
NATO Stock Number
Yes - ITAR Controlled
Thread Class
Thread Direction
Locking Feature
Prevailing torque all metal design
Washer Outside Diameter
0.912 inches
Dry film lubricant
Overall Height
Between 0.420 inches and 0.480 inches
Nut Style
Washer Thickness
0.045 inches
Width Across Flats
Between 0.680 inches and 0.692 inches
Tempurature Rating
450.0 degrees Fahrenheit
Thread Series
Thready Qty Per Inch (tpi)
Thread Size
0.562 inches
Countersink Angle
120.0 degrees nut
Surface Treatment
Surface Treatment Specification
QQ-P-416, type 1, cl 3 federal specification single treatment response
Specification Data
80205-NAS1291 government standard
Recent Solicitations
Solicitation Return by Date Buyer Code Quantity
SPE5E820T1797 2019-11-22 PHPHA 1841 EA

Pricing and Availability

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NSN 5310-00-224-0471 Datasheet

Supply Class (FSC):
Nuts And Washers
Cross Reference:
  • NAS1291-9
Cage Codes:
  • National Aerospace Standards (CAGE 80205)
Schedule B & Trade:
  • Schedule B: 7318160000 (NAICS 332722)

    Nuts of iron or steel

  • SITC: 69421

    Screws, bolts, nuts, screw hooks, rivets, washers and similar articles, threaded, of iron or steel

  • End Use: 12300

    Finished metal shapes


N - Indicates there is no data in the humors and the nsn is in a fsc not generally suspected of containing hazardous materials.


U - Precious metal content is unknown


- The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.

Freight Information:
  • NMFC:

    093486 - Bolts, nuts or screws, noi (sub 3)

  • WCC:

    573 - Bolts or nuts (iron or steel),(less than 35 feet)

  • SHC:

    9 - Other or no special handling required (sh)

  • ADC:

    A - Shipment is not a consolidation and does not exceed 84 inches in any dimension.

  • ACC:

    B - Construction materials: includes paint and related materials, prefabricated building, wood products, metal and composition mater

  • LTL:

    W - Rating variable

  • TCC:

    Z - No special type of cargo code applicable

NSN Management Codes:
  • SOS
  • AAC
  • Quantity per pack
  • Unit of Measure
  • Shelf Life
  • Classification Control
  • Repariability
    This is a nonreparable item. if condemned or economically unserviceable, then dispose at the level authorized replace the item.

Questions & Answers:

What are the historical prices recorded for this stock number?
Historical data shows pricing from $66.87 to $111.44..
Does NSN 5310-00-224-0471 have a shelf life?
No. There is no shelf life applicable for this NSN.
What NATO entities are users of this NSN?
Department Of The Army, Department Of The Air Force, Department Of The Navy, Poland, Brazil, Spain, Singapore, Malaysia, Belgium, Canada, New Zealand, Republic Of Korea, Netherlands, and Turkey
What is the NIIN of NSN 5310-00-224-0471?
002240471 or 00-224-0471
Does NSN 5310-00-224-0471 require demilitarization?
Yes - ITAR Controlled
What is the most recent solicitation for NSN 5310-00-224-0471?
Solicitation SPE5E820T1797 for qty 1841 on 11/15/2019
When was this national stock number assigned to the federal catalog?
Mar 27, 1970