A4639B

View detailed technical data, stock status, and sourcing information for: A4639B
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Federal Supply Group

Bearings

Federal Supply Classification

3110 Unmounted Antifriction Bearings

National Stock Number

3110-01-023-2727

Item Name Code

22293

Assigment Date

06/13/1976 (50 years ago)

6.390 inches nominal outside diameter, flat w/aperture cross-sectional shape style, 4 bolt circle hole quantity, 0.870 inches nominal overall thickness, 4.724 inches nominal aperture 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: flat w/aperture
Outside Diameter: 6.390 inches nominal
Aperture Diameter: 4.724 inches nominal
Bolt Circle Hole Quantity: 4
Overall Thickness: 0.870 inches nominal
Thread Quantity Per Inch: 16
Nominal Thread Size: 0.375 inches
Mounting Hole Type: round, threaded
Style Designator: round
Thread Series Designator: unc

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
A4639B	Bearing Retaining Plate

FAQs

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

What is the FSCG of the NSN 3110-01-023-2727?

The FSCG of the NSN 3110-01-023-2727 is 3110

Does the NSN 3110-01-023-2727 have a Schedule B code assigned?

Yes, the Schedule B code is 8482997090

Does NSN 3110-01-023-2727 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 3110-01-023-2727 contain precious materials?

Item does not contain precious metal.

Does NSN 3110-01-023-2727 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 3110-01-023-2727 was assigned to the Federal Catalog?

It was assigned 50 years ago, on Sun, Jun 13, 1976