51-90031

View detailed technical data, stock status, and sourcing information for: 51-90031
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Federal Supply Group

Electrical and Electronic Equipment Components

Federal Supply Classification

5999 Miscellaneous Electrical and Electronic Components

National Stock Number

5999-00-494-6125

Item Name Code

20281

Assigment Date

02/16/1970 (56 years ago)

A shaped metallic item designed to increase the effectiveness of radio frequency/electromagnetic interference, or a nonmetallic item containing a wire mesh, metal, or other electrically conductive particles designed to provide environmental sealing and radio frequency/electromagnetic interference shielding. For bulk items see wire mesh, knitted or gasketing material, conductive.

0.127 inches minimum and 0.133 inches maximum hole diameter, 10.940 inches nominal overall width, mesh and metal cross-sectional shape style, 13.060 inches nominal overall length, 0.120 inches nominal outside corner radius

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: mesh and metal
Hole Diameter: 0.127 inches minimum and 0.133 inches maximum
Overall Length: 13.060 inches nominal
Overall Width: 10.940 inches nominal
Outside Corner Radius: 0.120 inches nominal
Aperture Width: 9.706 inches nominal
Aperture Length: 11.826 inches nominal
Center To Center Distance Between Bolt Holes Along Width: 7.000 inches nominal
Center To Center Distance Between Bolt Holes Along Length: 4.500 inches nominal
Outside Edge To Bolt Hole Center Distance Along Width: 0.281 inches nominal
Outside Edge To Bolt Hole Center Distance Along Length: 0.281 inches nominal
Cross Section Outside Diameter: 0.180 inches nominal
Cross-Sectional Thickness: 0.180 inches nominal
Cross-Sectional Height: 0.093 inches nominal
Bolt Hole Quantity: 6
Environmental Protection Material Location: around rf shielding gasket outer perimeter
Material: aluminum alloy 6063 and nickel alloy 400 emi/rfi conductor
Material: rubber chloroprene class cr environmental seal
Material Document And Classification: mil-r-6130,type 2,grade a,condition medium mil spec single material response environmental seal
Material Document And Classification: qq-a-200/9,alloy 6063-t42 fed spec 1st material response and qq-n-281,class a fed spec 2nd material response emi/rfi conductor
Surface Treatment: chromate and chromate zinc and enamel emi/rfi conductor
Surface Treatment Document And Classification: mil-c-5541,class 2 mil spec 1st treatment response and mil-p-8585 mil spec 2nd treatment response and mil-e-15090,type 2,class 2 mil spec 3rd treatment response emi/rfi conductor
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
136635-0002	Electronic Shielding Gasket
136635-2	Electronic Shielding Gasket
44-92587	Electronic Shielding Gasket
51-90031	Electronic Shielding Gasket

FAQs

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

What is the FSCG of the NSN 5999-00-494-6125?

The FSCG of the NSN 5999-00-494-6125 is 5999

Does the NSN 5999-00-494-6125 have a Schedule B code assigned?

Yes, the Schedule B code is 8543909000

Does NSN 5999-00-494-6125 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 5999-00-494-6125 contain precious materials?

Precious metal content is unknown

Does NSN 5999-00-494-6125 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 5999-00-494-6125 was assigned to the Federal Catalog?

It was assigned 56 years ago, on Mon, Feb 16, 1970