4-1639

View detailed technical data, stock status, and sourcing information for: 4-1639
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Federal Supply Group

Electrical and Electronic Equipment Components

Federal Supply Classification

5977 Electrical Contact Brushes and Electrodes

National Stock Number

5977-00-660-8581

Item Name Code

02937

Assigment Date

01/01/1963 (63 years ago)

0.156 inches nominal thread length, 1.437 inches nominal overall width, 0.624 inches nominal overall thickness, 0.279 inches nominal inside width, 1.031 inches nominal overall length

Product Characteristics

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

Thread Length: 0.156 inches nominal
Overall Length: 1.031 inches nominal
Overall Width: 1.437 inches nominal
Inside Width: 0.279 inches nominal
Overall Thickness: 0.624 inches nominal
Mounting Facility Quantity: 1
Top Thread Location: external
Brush Quantity Accommodated Per Holder: 1
Inside Thickness: 0.129 inches nominal
Mounting Facility: unthreaded holes
Material: copper alloy box supporting
Style Designator: round offset
Thread Size And Series/Type Designator: 0.437-20 unf

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
234-0999-00	Electrical Contact Brush Holder
4-1639	Electrical Contact Brush Holder

FAQs

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

What is the FSCG of the NSN 5977-00-660-8581?

The FSCG of the NSN 5977-00-660-8581 is 5977

Does the NSN 5977-00-660-8581 have a Schedule B code assigned?

Yes, the Schedule B code is 8545900000

Does NSN 5977-00-660-8581 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 5977-00-660-8581 contain precious materials?

Precious metal content is unknown

Does NSN 5977-00-660-8581 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 5977-00-660-8581 was assigned to the Federal Catalog?

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