20399ALTM

View detailed technical data, stock status, and sourcing information for: 20399ALTM
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Federal Supply Group

Electrical and Electronic Equipment Components

Federal Supply Classification

5977 Electrical Contact Brushes and Electrodes

National Stock Number

5977-00-251-9873

Item Name Code

00302

Assigment Date

01/01/1963 (63 years ago)

0.375 inches nominal thickness, 0.500 inches nominal width, 1.000 inches nominal length, rectangular commutator body style, 9 shunt position designator

Product Characteristics

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

Shunt Position Designator: 9
Body Style: rectangular commutator
Width: 0.500 inches nominal
Thickness: 0.375 inches nominal
Length: 1.000 inches nominal
Brush Shunt Length: 1.211 inches nominal single shunt
Top Style: beveled front
Contact Face Style: concave on bevel
Bevel Angle: 30.0 degrees nominal
Shunt Insulation Provision And Quantity: 1 uninsulated
Angle: 40.0 degrees nominal
Material: electrographitic
Material Document And Classification: national carbon co,gr 255 mfr ref single material response
Style Designator: one piece
Terminal Type And Quantity: 1 straight w/slot

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5977-00-238-9187	No Name Available	10/26/1966
5977-00-413-7146	No Name Available	01/01/1963

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
20399ALTM	Electrical Contact Brush
63001000	Electrical Contact Brush
RC12-1608	Electrical Contact Brush
S1123248E101	Electrical Contact Brush

FAQs

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

What is the FSCG of the NSN 5977-00-251-9873?

The FSCG of the NSN 5977-00-251-9873 is 5977

Does the NSN 5977-00-251-9873 have a Schedule B code assigned?

Yes, the Schedule B code is 8545200000

Does NSN 5977-00-251-9873 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 5977-00-251-9873 contain precious materials?

Item does not contain precious metal.

Does NSN 5977-00-251-9873 contain hazardous materials?

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

When the NSN 5977-00-251-9873 was assigned to the Federal Catalog?

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