44B3021-439B

View detailed technical data, stock status, and sourcing information for: 44B3021-439B
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Federal Supply Group

Bearings

Federal Supply Classification

3120 Unmounted Plain Bearings

National Stock Number

3120-00-839-0297

Item Name Code

13211

Assigment Date

01/01/1962 (64 years ago)

1.7500 inches minimum and 1.7510 inches maximum diameter, rectangular cross-sectional shape style, 0.8120 inches nominal overall thickness, round w/keyway center hole shape style, 5.1250 inches nominal outside 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: rectangular
Outside Diameter: 5.1250 inches nominal
Center Hole Shape Style: round w/keyway
Diameter: 1.7500 inches minimum and 1.7510 inches maximum
Overall Thickness: 0.8120 inches nominal
Center Hole Keyway Depth: 0.1875 inches nominal
Center Hole Keyway Width: 0.3738 inches minimum and 0.3800 inches maximum
Center Hole Keyway Quantity: 1
Bearing Surface Hole Quantity: 2 first
Bearing Surface Hole Diameter: 0.2500 inches nominal first
Corner Shape: chamfered second inside corner
Corner Shape: chamfered first inside corner
Corner Shape: square first outside corner
Corner Shape: square second outside corner
Hardness Rating: 52.0 rockwell c minimum overall
Special Features: first inside corner chamfer identical to second. thd surface holes1/4-20 unc-3
Material: lubricant lubrication
Material: steel overall
Material Document And Classification: qq-s-624 fed spec single material response overall
Surface Condition: lapped
Style Designator: round

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
44B3021-439B	Thrust Washer Bearing

FAQs

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

What is the FSCG of the NSN 3120-00-839-0297?

The FSCG of the NSN 3120-00-839-0297 is 3120

Does the NSN 3120-00-839-0297 have a Schedule B code assigned?

Yes, the Schedule B code is 8482105008

Does NSN 3120-00-839-0297 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 3120-00-839-0297 contain precious materials?

Item does not contain precious metal.

Does NSN 3120-00-839-0297 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 3120-00-839-0297 was assigned to the Federal Catalog?

It was assigned 64 years ago, on Mon, Jan 1, 1962