M81820/3-8T

View detailed technical data, stock status, and sourcing information for: M81820/3-8T
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Federal Supply Group

Bearings

Federal Supply Classification

3120 Unmounted Plain Bearings

National Stock Number

3120-01-694-5938

Item Name Code

13208

Assigment Date

04/12/2021 (5 years ago)

A hardened externally threaded fastener whose thread extends to the bearing surface of the head. The thread may be fluted or otherwise designed to cut or form its own mating thread. Excludes:screw, assembled washer.

0.500 inches minimum and 0.501 inches maximum bore diameter, 1.000 inches minimum and 1.020 inches maximum outer member outside diameter, ch-53a/d/e end item identification, 0.623 inches minimum and 0.625 inches maximum inner member width, 0.500 inches minimum and 0.510 inches maximum outer member width

Product Characteristics

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

Bore Diameter: 0.500 inches minimum and 0.501 inches maximum
End Item Identification: ch-53a/d/e
Outer Member Outside Diameter: 1.000 inches minimum and 1.020 inches maximum
Outer Member Width: 0.500 inches minimum and 0.510 inches maximum
Inner Member Width: 0.623 inches minimum and 0.625 inches maximum
Part Name Assigned By Controlling Agency: bearing,plain,self-aligning,self-lubricating,lined bore,low speed,wide,grooved race,-65 to +326 f
Special Features: ball 440c hrc 55-62 or ph13-8 hrc 43 min,race hor 28-37 before swaging
Material: plastic polytetrafluoroethylene race liner
Material: steel comp 440c and steel comp xm-13 inner member
Material: steel comp 630 outer race member
Material Document And Classification: ams 5630,5880,5618 assn std 1st material response or ams 5629 assn std 2nd material response inner member
Material Document And Classification: ams 5643 assn std single material response outer race member
Surface Treatment: passivate inner member
Surface Treatment Document And Classification: ams 2700,method 1 or 2 or astm a967 citric 1,citric 2 and citric 3 are acceptable assn std single treatment response inner member
Style Designator: with insert and/or liner with staking groove
Specification/Standard Data: 0u583-as81820/3 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
M81820/3-8T	Self-Aligning Plain Bearing

FAQs

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

What is the FSCG of the NSN 3120-01-694-5938?

The FSCG of the NSN 3120-01-694-5938 is 3120

Does the NSN 3120-01-694-5938 have a Schedule B code assigned?

Yes, the Schedule B code is 8482300040

Does NSN 3120-01-694-5938 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 3120-01-694-5938 contain precious materials?

Item does not contain precious metal.

Does NSN 3120-01-694-5938 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 3120-01-694-5938 was assigned to the Federal Catalog?

It was assigned 5 years ago, on Mon, Apr 12, 2021