4B20S4-020

View detailed technical data, stock status, and sourcing information for: 4B20S4-020
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Federal Supply Group

Bearings

Federal Supply Classification

3120 Unmounted Plain Bearings

National Stock Number

3120-00-693-6707

Item Name Code

13206

Assigment Date

01/01/1963 (63 years ago)

0.4900 inches minimum and 0.5100 inches maximum flange outside diameter, 0.2495 inches minimum and 0.2505 inches maximum body inside diameter, 0.0570 inches minimum and 0.0620 inches maximum flange width, 0.3760 inches minimum and 0.3765 inches maximum body outside diameter, 0.6770 inches minimum and 0.6920 inches maximum overall length

Product Characteristics

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

Overall Length: 0.6770 inches minimum and 0.6920 inches maximum
Body Outside Diameter: 0.3760 inches minimum and 0.3765 inches maximum
Body Inside Diameter: 0.2495 inches minimum and 0.2505 inches maximum
Flange Outside Diameter: 0.4900 inches minimum and 0.5100 inches maximum
Flange Width: 0.0570 inches minimum and 0.0620 inches maximum
Corner Shape: square all corners
Surface Finish: 125.0 microinches inside diameter surface of body
Surface Finish: 125.0 microinches outside diameter surface of body
Surface Finish: 125.0 microinches left end surface of body and flange
Surface Finish: 125.0 microinches right end surface of body
Surface Finish: 125.0 microinches right end surface of left flange
Surface Finish: 250.0 microinches outside diameter surface of flange
Material: steel comp 4130 overall
Material Document And Classification: mil-t-6736 mil spec single material response overall
Surface Treatment: cadmium left end surface of body and flange
Surface Treatment: cadmium outside diameter surface of body
Surface Treatment: cadmium outside diameter surface of flange
Surface Treatment: cadmium right end surface of body
Surface Treatment: cadmium right end surface of left flange
Surface Treatment Document And Classification: qq-p-416,ty 2,cl 3 fed spec single treatment response outside diameter surface of flange
Surface Treatment Document And Classification: qq-p-416,ty 2,cl 3 fed spec single treatment response outside diameter surface of body
Surface Treatment Document And Classification: qq-p-416,ty 2,cl 3 fed spec single treatment response right end surface of body
Surface Treatment Document And Classification: qq-p-416,ty 2,cl 3 fed spec single treatment response right end surface of left flange
Surface Treatment Document And Classification: qq-p-416,ty 2,cl 3 fed spec single treatment response left end surface of body and flange
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
4B20S4-020	Sleeve Bushing

FAQs

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

What is the FSCG of the NSN 3120-00-693-6707?

The FSCG of the NSN 3120-00-693-6707 is 3120

Does the NSN 3120-00-693-6707 have a Schedule B code assigned?

Yes, the Schedule B code is 8482997060

Does NSN 3120-00-693-6707 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 3120-00-693-6707 contain precious materials?

Item does not contain precious metal.

Does NSN 3120-00-693-6707 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 3120-00-693-6707 was assigned to the Federal Catalog?

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