NAS77A4-20P

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Federal Supply Group

Bearings

Federal Supply Classification

3120 Unmounted Plain Bearings

National Stock Number

3120-00-661-3893

Item Name Code

13206

Assigment Date

01/01/1963 (63 years ago)

0.4900 inches minimum and 0.5100 inches maximum flange outside diameter, 0.3756 inches minimum and 0.3761 inches maximum body outside diameter, 0.2500 inches minimum and 0.2515 inches maximum body inside diameter, 0.0570 inches minimum and 0.0620 inches maximum flange width, 0.2520 inches minimum and 0.2670 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: 0.2520 inches minimum and 0.2670 inches maximum
Body Outside Diameter: 0.3756 inches minimum and 0.3761 inches maximum
Body Inside Diameter: 0.2500 inches minimum and 0.2515 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: chamfered inside left corner
Corner Shape: chamfered inside right corner
Corner Shape: square left flange outside right corner
Corner Shape: square outside left corner
Corner Shape: square outside right corner
Corner Shape: undercut left flange body corner
Surface Finish: 100.0 microinches intermediate layer
Material: copper alloy 642 overall
Material Document And Classification: qq-c-465 fed spec single material response overall
Surface Treatment: cadmium overall
Surface Treatment Document And Classification: qq-p-416,ty 2,cl 3 fed spec single treatment response overall
Style Designator: solid, external flange one end
Specification/Standard Data: 80205-nas77 professional/industrial association standard

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
10107656	Sleeve Bushing
NAS77A4-020P	Sleeve Bushing
NAS77A4-20P	Sleeve Bushing

FAQs

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

What is the FSCG of the NSN 3120-00-661-3893?

The FSCG of the NSN 3120-00-661-3893 is 3120

Does the NSN 3120-00-661-3893 have a Schedule B code assigned?

Yes, the Schedule B code is 8482997060

Does NSN 3120-00-661-3893 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 3120-00-661-3893 contain precious materials?

Item does not contain precious metal.

Does NSN 3120-00-661-3893 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 3120-00-661-3893 was assigned to the Federal Catalog?

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