5999-01-490-9796

Find complete technical information, availability, and procurement data for: 5999-01-490-9796
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Federal Supply Group

Electrical and Electronic Equipment Components

Federal Supply Classification

5999 Miscellaneous Electrical and Electronic Components

National Stock Number

5999-01-490-9796

Item Name Code

20281

Assigment Date

10/09/2001 (24 years ago)

An adapter having machine threads (straight threads other than pipe or hose series) designed to accommodate a tube on one end or an unthreaded end designed to accommodate a tube. The other end has external or internal machine threads (straight threads other than pipe or hose series) and is designed to facilitate a gasket, preformed packing, washer, or the like to form a seal at the boss. It is designed to join a tube or tube fitting to a boss or boss fitting in a straight line on items such as tanks, housings, valve fittings, and the like. See also coupling, tube and nipple, tube.

8.840 inches nominal overall width, 0.218 inches minimum and 0.229 inches maximum hole diameter, 7.600 inches nominal bolt circle diameter, metal cross-sectional shape style, 6.000 inches nominal aperture diameter

Product Characteristics

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

Cross-Sectional Shape Style: metal
Hole Diameter: 0.218 inches minimum and 0.229 inches maximum
Bolt Circle Diameter: 7.600 inches nominal
Overall Width: 8.840 inches nominal
Aperture Diameter: 6.000 inches nominal
Outside Corner Radius: 0.375 inches nominal
Side Radius From Bolt Circle: 7.960 inches nominal
Cross-Sectional Thickness: 0.060 inches nominal
Bolt Hole Quantity: 12
End Item Identification: e-3a aircraft
Part Name Assigned By Controlling Agency: seal, emp - aft zone supply air distribution
Special Features: when installed at thickness shown on drawing and compressed under a load of 20 psi shall be capable of providing a minimum of 60 db of shielding effectiveness in the frequency range 20 khz to 100 mhz
Material: steel and rubber silicone class q overall
Nuclear Hardness Critical Feature: hardened
Surface Treatment: copper and tin overall
Style Designator: non-circular

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
204-67058-1	Electronic Shielding Gasket
44-90257	Electronic Shielding Gasket

FAQs

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

What is the FSCG of the NSN 5999-01-490-9796?

The FSCG of the NSN 5999-01-490-9796 is 5999

Does the NSN 5999-01-490-9796 have a Schedule B code assigned?

Yes, the Schedule B code is 8543909000

Does NSN 5999-01-490-9796 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 5999-01-490-9796 contain precious materials?

Item does not contain precious metal.

Does NSN 5999-01-490-9796 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 5999-01-490-9796 was assigned to the Federal Catalog?

It was assigned 24 years ago, on Tue, Oct 9, 2001