5340-00-030-0990

Find complete technical information, availability, and procurement data for: 5340-00-030-0990
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5340 Commercial Hardware

National Stock Number

5340-00-030-0990

Item Name Code

24328

Assigment Date

01/01/1963 (63 years ago)

A circular item, usually having a flat or grooved flange, boss(es), and/or counterbore, designed to accommodate the end of the spring. It is used to position the spring but does not encase the spring or restrain lateral motion. It may be used in conjunction with a retainer,helical compression spring. Excludes:washer (as modified), seat,ball socket, and holder,spring. See also rotor,engine poppet valve.

1.3440 inches nominal first step diameter, 0.3750 inches nominal bore diameter, 0.7500 inches nominal counterbore diameter, 0.5000 inches nominal overall height, 45.0 countersink angle in deg

Product Characteristics

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

Countersink Angle In Deg: 45.0
Counterbore Diameter: 0.7500 inches nominal
Overall Height: 0.5000 inches nominal
First Step Diameter: 1.3440 inches nominal
Bore Diameter: 0.3750 inches nominal
Design Type: solid
Countersink Diameter: 0.8630 inches minimum and 0.8730 inches maximum
End Diameter: 0.7500 inches nominal
Distance From End To First Step: 0.3750 inches nominal
Counterbore Length: 0.3910 inches nominal
Features Provided: casehardened
Material: steel
Style Designator: seat

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
2805-00-096-6244	No Name Available	09/30/1966
2805-00-313-1772	No Name Available	03/01/1982
2805-00-799-1637	No Name Available	01/01/1962

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
B9A6514A	Helical Compression Spring Seat
EAD6514A	Helical Compression Spring Seat

FAQs

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

What is the FSCG of the NSN 5340-00-030-0990?

The FSCG of the NSN 5340-00-030-0990 is 5340

Does NSN 5340-00-030-0990 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 5340-00-030-0990 contain precious materials?

Precious metal content is unknown

Does NSN 5340-00-030-0990 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 5340-00-030-0990 was assigned to the Federal Catalog?

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