5310-00-631-4031

Find complete technical information, availability, and procurement data for: 5310-00-631-4031
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-631-4031

Item Name Code

04889

Assigment Date

01/01/1963 (63 years ago)

1.250 inches nominal overall height, right-hand thread direction, 3.000 inches nominal nut counterbore diameter, 5.250 inches nominal washer outside diameter, 3b thread class

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 Direction: right-hand
Washer Outside Diameter: 5.250 inches nominal
Counterbore Diameter: 3.000 inches nominal nut
Overall Height: 1.250 inches nominal
Nut Style: hexagon
Washer Thickness: 0.375 inches nominal
Nut Counterbore Depth: 0.125 inches nominal nut
Width Across Flats: 4.500 inches nominal
Thread Series: unc
Features Provided: casehardened
Thread Quantity Per Inch: 12
Hardness Rating: 269.0 brinell standard minimum and 321.0 brinell standard maximum
Nominal Thread Size: 2.750 inches
Material: steel comp 8640 overall
Material Document And Classification: qq-s-624 fed spec single material response overall

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
6314031	Nut,plain,extended Washer,hexago

FAQs

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

What is the FSCG of the NSN 5310-00-631-4031?

The FSCG of the NSN 5310-00-631-4031 is 5310

Does the NSN 5310-00-631-4031 have a Schedule B code assigned?

Yes, the Schedule B code is 7318160000

Does NSN 5310-00-631-4031 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 5310-00-631-4031 contain precious materials?

Precious metal content is unknown

Does NSN 5310-00-631-4031 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 5310-00-631-4031 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963