BR521

View detailed technical data, stock status, and sourcing information for: BR521

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BR521
Federal Supply Group
Electrical and Electronic Equipment Components
National Stock Number
5977-00-093-5610
Item Name Code
00302
Assigment Date
01/01/1963 (63 years ago)

An item specifically designed to be used in the transfer of electrical energy to or from another conducting surface. Either the brush or the surface is continually moving during the transfer of energy. The brush is usually composed in part of some form of the element carbon. Includes: (1) a single brush either with or without an attached shunt (flexible wire lead) and/or a helical or flat type pressure spring; (2) a split brush composed of two or more pieces (wafers), which are used in place of one brush usually connected together by individual shunts to a common terminal; (3) paired brushes composed of two identical or non-identical brushes connected together by a common shunt either with or without pressure springs or connected by individual shunts to a common terminal, or with pressure springs and connected to a common bar, bracket or the like either with or without individual shunts; (4) multiple brushes composed of more than two identical or non-identical brushes without pressure springs connected by individual shunts to a common terminal, or with pressure springs and connected to a common bar, bracket or the like by individual shunts. Does not include moving contacts which make and slide past stationary contacts, but are stationary while the circuit is conducting, such as the sliding contacts on a rheostat or the stationary contact on a synchro. Excludes: contact, electrical; and contact assembly, electrical.

cylindrical body style, 0.141 inches nominal diameter, 0.438 inches nominal length, concave contact face style, contact surface-commutator special features

Product Characteristics

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

Body Style
cylindrical
Diameter
0.141 inches nominal
Length
0.438 inches nominal
Contact Face Style
concave
Special Features
contact surface-commutator
Style Designator
one piece
Reference Number Differentiating Characteristics
as differentiated by packaging dats

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN Name Date
5977-00-367-3747 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
BR521 Electrical Contact Brush

FAQs

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

What is the FSCG of the NSN 5977-00-093-5610?
The FSCG of the NSN 5977-00-093-5610 is 5977
Does the NSN 5977-00-093-5610 have a Schedule B code assigned?
Yes, the Schedule B code is 8545200000
Does NSN 5977-00-093-5610 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 5977-00-093-5610 contain precious materials?
Precious metal content is unknown
Does NSN 5977-00-093-5610 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 5977-00-093-5610 was assigned to the Federal Catalog?
It was assigned 63 years ago, on Tue, Jan 1, 1963

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