MB-20405

View detailed technical data, stock status, and sourcing information for: MB-20405
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Federal Supply Group

Electrical and Electronic Equipment Components

Federal Supply Classification

5977 Electrical Contact Brushes and Electrodes

National Stock Number

5977-00-284-9979

Item Name Code

15251

Assigment Date

01/01/1963 (63 years ago)

2 component quantity, brush assy, 1.530 in. nom o/a lg; brush - 0.562 in. nom o/a lg, 0.312 in. nom w, 0.187 in. nom thk; concave face 0.468 in. radius, cylindrical top 0.062 in. lg and 0.215 in. dia; shunt pressure spring and cap terminal w/ears; material to national carbon grade ay special features

Product Characteristics

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

Component Quantity: 2
Special Features: brush assy, 1.530 in. nom o/a lg; brush - 0.562 in. nom o/a lg, 0.312 in. nom w, 0.187 in. nom thk; concave face 0.468 in. radius, cylindrical top 0.062 in. lg and 0.215 in. dia; shunt pressure spring and cap terminal w/ears; material to national carbon grade ay

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5977-00-214-0408	No Name Available	04/25/1969

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
63914494	Electrical Contact Brush Set
C33562-4	Electrical Contact Brush Set
MB-20405	Electrical Contact Brush Set
SCD99877-109	Electrical Contact Brush Set

FAQs

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

What is the FSCG of the NSN 5977-00-284-9979?

The FSCG of the NSN 5977-00-284-9979 is 5977

Does the NSN 5977-00-284-9979 have a Schedule B code assigned?

Yes, the Schedule B code is 8545200000

Does NSN 5977-00-284-9979 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 5977-00-284-9979 contain precious materials?

Precious metal content is unknown

Does NSN 5977-00-284-9979 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 5977-00-284-9979 was assigned to the Federal Catalog?

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