4B21S4-104

View detailed technical data, stock status, and sourcing information for: 4B21S4-104
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Federal Supply Group

Bearings

Federal Supply Classification

3120 Unmounted Plain Bearings

National Stock Number

3120-00-288-4917

Item Name Code

13205

Assigment Date

01/01/1963 (63 years ago)

0.2505 inches nominal body inside diameter, 1.1250 inches nominal overall length, steel overall material, square all corners corner shape, 0.3735 inches nominal body outside diameter

Product Characteristics

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

Overall Length: 1.1250 inches nominal
Body Outside Diameter: 0.3735 inches nominal
Body Inside Diameter: 0.2505 inches nominal
Corner Shape: square all corners
Material: steel overall
Style Designator: solid, plain, no outside flanges

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
4B21S4-104	Sleeve Bearing
LD137-0017-2036	Sleeve Bearing

FAQs

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

What is the FSCG of the NSN 3120-00-288-4917?

The FSCG of the NSN 3120-00-288-4917 is 3120

Does the NSN 3120-00-288-4917 have a Schedule B code assigned?

Yes, the Schedule B code is 8482997090

Does NSN 3120-00-288-4917 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 3120-00-288-4917 contain precious materials?

Item does not contain precious metal.

Does NSN 3120-00-288-4917 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 3120-00-288-4917 was assigned to the Federal Catalog?

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