A51B21815-21

View detailed technical data, stock status, and sourcing information for: A51B21815-21
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Federal Supply Group

Bearings

Federal Supply Classification

3120 Unmounted Plain Bearings

National Stock Number

3120-01-052-0068

Item Name Code

13206

Assigment Date

12/09/1977 (48 years ago)

A valve permitting flow in one direction only. It does not have a stem, except when equipped with a lever and weight and has no pressure adjustment. It may be inline or cartridge (manifold) design.

0.5005 inches minimum and 0.5015 inches maximum body inside diameter, 0.7200 inches nominal flange outside diameter, 0.0370 inches nominal flange width, 0.3220 inches nominal overall length, 0.6260 inches minimum and 0.6265 inches maximum 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: 0.3220 inches nominal
Body Outside Diameter: 0.6260 inches minimum and 0.6265 inches maximum
Body Inside Diameter: 0.5005 inches minimum and 0.5015 inches maximum
Flange Outside Diameter: 0.7200 inches nominal
Flange Width: 0.0370 inches nominal
Corner Shape: square left flange body corner
Corner Shape: square left flange outside right corner
Corner Shape: square outside left corner
Corner Shape: square inside left corner
Corner Shape: square inside right corner
Corner Shape: square outside right corner
Hardness Rating: 40.0 rockwell c minimum and 46.0 rockwell c maximum overall
Surface Finish: 125.0 microinches intermediate layer
Material: steel comp 630 overall
Material Document And Classification: ams 5643 assn std single material response overall
Surface Treatment: passivate overall
Surface Treatment Document And Classification: mil-s-5002 mil spec single treatment response overall
Style Designator: solid, external flange one end

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
A51B21815-21	Sleeve Bushing

FAQs

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

What is the FSCG of the NSN 3120-01-052-0068?

The FSCG of the NSN 3120-01-052-0068 is 3120

Does the NSN 3120-01-052-0068 have a Schedule B code assigned?

Yes, the Schedule B code is 8482997060

Does NSN 3120-01-052-0068 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 3120-01-052-0068 contain precious materials?

Item does not contain precious metal.

Does NSN 3120-01-052-0068 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 3120-01-052-0068 was assigned to the Federal Catalog?

It was assigned 48 years ago, on Fri, Dec 9, 1977