A51H20520-1

View detailed technical data, stock status, and sourcing information for: A51H20520-1
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Federal Supply Group

Bearings

Federal Supply Classification

3120 Unmounted Plain Bearings

National Stock Number

3120-00-160-0583

Item Name Code

13209

Assigment Date

08/21/1972 (53 years ago)

2.3440 inches nominal overall length, right-hand thread direction, 0.2495 inches minimum and 0.2500 inches maximum bore diameter, 3a thread class, externally threaded shank style

Product Characteristics

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

Thread Class: 3a
Thread Direction: right-hand
Shank Style: externally threaded
Overall Length: 2.3440 inches nominal
Bore Diameter: 0.2495 inches minimum and 0.2500 inches maximum
Outer Member Outside Diameter: 0.8760 inches nominal
Bore Center To Shank End Distance: 1.9060 inches nominal
Outer Member Width: 0.2450 inches minimum and 0.2550 inches maximum
Inner Member Width: 0.3410 inches minimum and 0.3430 inches maximum
Shank Thread Length: 1.3120 inches nominal
Thread Diameter: 0.375 inches nominal
Thread Quantity Per Inch: 24
Hardness Rating: 38.0 rockwell c minimum and 45.0 rockwell c maximum rod end body
Hardness Rating: 52.0 rockwell c minimum and 62.0 rockwell c maximum inner member
Hardness Rating: 23.0 rockwell c minimum and 35.0 rockwell c maximum race insert
Special Features: slot in shank 0.098 in. wide
Material: plastic polytetrafluoroethylene race liner
Material: steel comp 440c inner member
Material: steel comp 630 or steel comp 631 race insert
Material: steel comp xm-12 rod end body
Material Document And Classification: ams 5630,81343 assn std single material response inner member
Material Document And Classification: ams 5643 assn std all material responses or ams 5528 assn std all material responses or aisi 410 assn std all material responses race insert
Material Document And Classification: ams 5659,81343 assn std single material response rod end body
Surface Treatment: nickel and chromium rod end body
Surface Treatment Document And Classification: qq-c-320 fed spec all treatment responses rod end body
Style Designator: ball type
Test Data Document: "81349-mil-i-6868 specification (includes engineering type bulletins, brochures,etc., that reflect specification type data in specification format; excludes commercial catalogs, industry directories, and similar trade publications, reflecting general type data on certain environmental and performance requirements and test conditions that are shown as "typical", "average", "nominal", etc.)."
Thread Series Designator: unjf

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
A51H20520-1	Rod End Plain Bearing

FAQs

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

What is the FSCG of the NSN 3120-00-160-0583?

The FSCG of the NSN 3120-00-160-0583 is 3120

Does the NSN 3120-00-160-0583 have a Schedule B code assigned?

Yes, the Schedule B code is 8483308055

Does NSN 3120-00-160-0583 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 3120-00-160-0583 contain precious materials?

Precious metal content is unknown

Does NSN 3120-00-160-0583 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 3120-00-160-0583 was assigned to the Federal Catalog?

It was assigned 53 years ago, on Mon, Aug 21, 1972