21820 FN 12

View detailed technical data, stock status, and sourcing information for: 21820 FN 12
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5340 Commercial Hardware

National Stock Number

5340-01-112-9874

Item Name Code

24327

Assigment Date

05/14/1981 (45 years ago)

An item of solid one-piece construction, designed to restrict the flow of a fluid through it. It has an orifice of a smaller size than the diameter of flow into it. Excludes:items such as valve (1), (as modified); and others with an adjustable orifice. Excludes:pipe, tube, or hose fittings with restricted passages and items designed to test fluid flow. For items containing screens or filters, see restrictor unit, fluid flow.

not casehardened casehardening indicator, 1.650 inches nominal flange diameter, 1.300 inches nominal body outside diameter, 1.340 inches nominal overall height, 0.057 inches nominal flange thickness

Product Characteristics

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

Casehardening Indicator: not casehardened
Flange Diameter: 1.650 inches nominal
Flange Thickness: 0.057 inches nominal
Overall Height: 1.340 inches nominal
Body Outside Diameter: 1.300 inches nominal
Body Inside Diameter: 1.122 inches nominal
End Hole Diameter: 0.565 inches nominal
Lip Thickness: 0.070 inches nominal
Material: steel comp 416
Material Document And Classification: aisi 416 assn std single material response
Style Designator: parallel

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
20435-001 FIND 23	Helical Compression Spr Retainer
20435-1090	Helical Compression Spr Retainer
21820 FN 12	Helical Compression Spr Retainer

FAQs

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

What is the FSCG of the NSN 5340-01-112-9874?

The FSCG of the NSN 5340-01-112-9874 is 5340

Does NSN 5340-01-112-9874 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 5340-01-112-9874 contain precious materials?

Item does not contain precious metal.

Does NSN 5340-01-112-9874 contain hazardous materials?

Indicates there is no information in the hmirs. The nsn is in a fsc in table ii of fed std 313 and a msds may be required by the user. The requirement for a msds is dependent on a hazard determination of the supplier or the intended end use of item.

When the NSN 5340-01-112-9874 was assigned to the Federal Catalog?

It was assigned 45 years ago, on Thu, May 14, 1981