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Hexagon Self-locking Nut

NSN: 5310-01-510-1237 | Model: M45913/4-4CG8C

A nut having a flat bottom and 6 sides. An integral feature is incorporated for locking on the threads of a mating member. Excludes nut (1), self-locking, cap.

NSN Properties and Flags
NATO Stock Number
Thread Class
Thread Direction
Locking Feature
Prevailing torque with metallic insert
Nut Style
Nut Height
Between 0.298 inches and 0.328 inches
End Application
Width Across Flats
Between 0.428 inches and 0.439 inches
Tempurature Rating
250.0 degrees fahrenheit
Thread Series
Thready Qty Per Inch (tpi)
Hardness Rating
Between 33.0 rockwell c and 39.0 rockwell c
Thread Size
0.250 inches
Bearing Surface Type
Steel nut
Material Specification
Sae j995, grade 8 national specification single material response nut
Recent Solicitations
Solicitation Return by Date Buyer Code Quantity
SPE5E718T2731 2017-12-18 PHPHA 375 HD

Inventory Check

The last inventory check on this NSN was done on 09/23/2021. Due to rapid changes in inventory this may not be the current stock qty.

  • New Surplus: 4044
  • New: 2297

Pricing and Availability

Send us a request for quote using the form below. Our team will contact you with an up to date pricing and availability quote ASAP.

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NSN 5310-01-510-1237 Datasheet

Supply Class (FSC):
Nuts And Washers
Cross Reference:
  • M45913/4-4CG8C
  • 5310PL0667059
Cage Codes:
  • Military Specifications (CAGE 81349)
  • Inspektorat Wsparcia Sil Zbrojnych (CAGE 9009H)
  • 5310-01-510-1237 replaces 5310-01-486-0993
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 hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.


A - Item does not contain precious metal.


- Represents items with no adp components


- 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 $10.73 to $17.89..
Does NSN 5310-01-510-1237 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, U.s. Marine Corps, Department Of The Navy, Poland, and Australia
What is the NIIN of NSN 5310-01-510-1237?
015101237 or 01-510-1237
Does NSN 5310-01-510-1237 require demilitarization?
Yes - ITAR Controlled
What is the most recent solicitation for NSN 5310-01-510-1237?
Solicitation SPE5E718T2731 for qty 375 on 12/14/2017
When was this national stock number assigned to the federal catalog?
Jul 15, 2003