21-00448-001

View detailed technical data, stock status, and sourcing information for: 21-00448-001

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21-00448-001
Federal Supply Group
Electrical and Electronic Equipment Components
National Stock Number
5999-01-326-8407
Item Name Code
20281
Assigment Date
10/03/1990 (35 years ago)

A thin flat metal or plastic item of various peripheral shapes having a solid or laminated cross-section. It is designed to maintain a predetermined distance between two surfaces. For round items without a hole and having a solid rectangular cross-section use disk, solid, plain. Items with either (1) a solid (not laminated) cross-section, or (2) a non-separable laminated cross-section with one hole centrally located, must have a thickness less than 0.006 inch (0.152 mm) for items less than 1/4 inch (6.35 mm) outside diameter or shortest distance across peripheral flats, and less than 0.016 inch (0.406 mm) for items 1/4 inch (6.35 mm) or more outside diameter, or shortest distance across peripheral flats. For items with thickness greater than those indicated above, see spacer, plate; washer, flat and spacer, ring. When thickness and/or outside diameter or shortest distance across peripheral flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance. See also shim stock, laminated; shim stock assortment, gasket; and bearing, washer, thrust.

0.170 inches minimum and 0.210 inches maximum outside corner radius, 7.980 inches minimum and 8.020 inches maximum overall width, 11.980 inches minimum and 12.020 inches maximum overall length, emi cross-sectional shape style, 0.120 inches minimum and 0.160 inches maximum hole 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
emi
Hole Diameter
0.120 inches minimum and 0.160 inches maximum
Overall Length
11.980 inches minimum and 12.020 inches maximum
Overall Width
7.980 inches minimum and 8.020 inches maximum
Outside Corner Radius
0.170 inches minimum and 0.210 inches maximum
Aperture Width
7.230 inches minimum and 7.270 inches maximum
Aperture Length
11.230 inches minimum and 11.270 inches maximum
Cross-Sectional Height
0.042 inches minimum and 0.082 inches maximum
Bolt Hole Quantity
27
Material
aluminum alloy stop
Material Document And Classification
astm b221 national spec single material response stop
Surface Treatment
chromate stop
Surface Treatment Document And Classification
mil-c-5541 mil spec single treatment response stop

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
07-0501-6487 Electronic Shielding Gasket
21-00448-001 Electronic Shielding Gasket

FAQs

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

What is the FSCG of the NSN 5999-01-326-8407?
The FSCG of the NSN 5999-01-326-8407 is 5999
Does the NSN 5999-01-326-8407 have a Schedule B code assigned?
Yes, the Schedule B code is 8543909000
Does NSN 5999-01-326-8407 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 5999-01-326-8407 contain precious materials?
Item does not contain precious metal.
Does NSN 5999-01-326-8407 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 5999-01-326-8407 was assigned to the Federal Catalog?
It was assigned 35 years ago, on Wed, Oct 3, 1990

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