J490

View detailed technical data, stock status, and sourcing information for: J490

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J490
Federal Supply Group
Hardware and Abrasives
Federal Supply Classification
5310 Nuts and Washers
National Stock Number
5310-01-099-6537
Item Name Code
05276
Assigment Date
08/22/1980 (45 years ago)

A nut having 12 drive points and 24 sides. The bearing surface may be washer faced. An integral locking feature is incorporated in the design of the head or in the threads.

3b thread class, unjf thread series, 28 thread quantity per inch, 0.250 inches nominal thread size

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Thread Class
3b
Thread Series
unjf
Thread Quantity Per Inch
28
Nominal Thread Size
0.250 inches

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN Name Date
5310-01-124-7829 No Name Available 08/01/2000

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number Name
10159693 Double Hexagon Self-Locking Nut
5310PL2178789 Double Hexagon Self-Locking Nut
BH00153-4 Double Hexagon Self-Locking Nut
H50299-4 Double Hexagon Self-Locking Nut
J490 Double Hexagon Self-Locking Nut
J490P04 Double Hexagon Self-Locking Nut
J490P04B Double Hexagon Self-Locking Nut
VN719W048 Double Hexagon Self-Locking Nut

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 5310-01-099-6537?
The FSCG of the NSN 5310-01-099-6537 is 5310
Does the NSN 5310-01-099-6537 have a Schedule B code assigned?
Yes, the Schedule B code is 9021100090
Does NSN 5310-01-099-6537 require demilitarization?
Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.
Does NSN 5310-01-099-6537 contain precious materials?
Item does not contain precious metal.
Does NSN 5310-01-099-6537 contain hazardous materials?
Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.
When the NSN 5310-01-099-6537 was assigned to the Federal Catalog?
It was assigned 45 years ago, on Fri, Aug 22, 1980

Professional Distribution

Certified to meet the strict requirements of defense, aerospace, and hazardous materials distribution.

  • ITAR Registered
  • DDTC Registered
  • HAZMAT Certified
  • AS9120 Quality Standards
  • 100% Quality Inspections

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Pricing

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ITAR Registered

In Stock

This item is currently available and ready for prompt shipment. Units may be offered in various conditions — new, surplus, or refurbished — and stored at verified global facilities. Request a quote to confirm current stock and delivery time.

New Material 313
As Removed 25
New Surplus 35
Serviceable 1
Total 374
Availability of this item was last updated on: 04/09/2026 03:04 PM EDT. Stock levels and pricing are subject to change.

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