2123003

View detailed technical data, stock status, and sourcing information for: 2123003
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-918-6921

Item Name Code

01857

Assigment Date

08/03/1966 (59 years ago)

hexagon nut style, 2b thread class, multiple launch rocket system (mlrs) end item identification, right-hand thread direction, 0.210 inches minimum and 0.227 inches maximum nut height

Product Characteristics

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

Thread Class: 2b
Thread Direction: right-hand
Nut Style: hexagon
Nut Height: 0.210 inches minimum and 0.227 inches maximum
End Item Identification: multiple launch rocket system (mlrs)
Width Across Flats: 0.551 inches minimum and 0.562 inches maximum
Thread Series: unc
Thread Quantity Per Inch: 16
Nominal Thread Size: 0.375 inches
Bearing Surface Type: chamfered or washer faced
Material: copper alloy 464 overall
Material Document And Classification: qq-b-637 fed spec single material response overall
Surface Treatment: oxide overall
Nondefinitive Spec/Std Data: 2 type and 5 style

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5310-00-017-7593	No Name Available	01/01/1983
5310-00-720-8531	No Name Available	10/01/1979
5310-00-835-7478	No Name Available	11/01/2007
5310-00-935-3610	No Name Available	01/01/1983

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
0740809	Hexagon Plain Nut
206429PC13	Hexagon Plain Nut
2123003	Hexagon Plain Nut
5310009186921	Hexagon Plain Nut
88-20560	Hexagon Plain Nut
88-20560-1	Hexagon Plain Nut
MS35691-20	Hexagon Plain Nut
MS35691-611	Hexagon Plain Nut
MS35691-612	Hexagon Plain Nut

FAQs

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

What is the FSCG of the NSN 5310-00-918-6921?

The FSCG of the NSN 5310-00-918-6921 is 5310

Does the NSN 5310-00-918-6921 have a Schedule B code assigned?

Yes, the Schedule B code is 8710000090

Does NSN 5310-00-918-6921 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 5310-00-918-6921 contain precious materials?

Precious metal content is unknown

Does NSN 5310-00-918-6921 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 5310-00-918-6921 was assigned to the Federal Catalog?

It was assigned 59 years ago, on Wed, Aug 3, 1966