KBE4-31CRW

View detailed technical data, stock status, and sourcing information for: KBE4-31CRW
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Federal Supply Group

Bearings

Federal Supply Classification

3120 Unmounted Plain Bearings

National Stock Number

3120-00-881-8631

Item Name Code

13209

Assigment Date

01/01/1962 (64 years ago)

right-hand thread direction, 3a thread class, 2.7490 inches nominal overall length, externally threaded shank style, 0.2495 inches minimum and 0.2500 inches maximum bore diameter

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: 2.7490 inches nominal
Bore Diameter: 0.2495 inches minimum and 0.2500 inches maximum
Outer Member Outside Diameter: 0.8750 inches nominal
Bore Center To Shank End Distance: 2.3120 inches nominal
Outer Member Width: 0.3400 inches maximum
Inner Member Width: 0.4790 inches minimum and 0.4840 inches maximum
Shank Thread Length: 1.4370 inches minimum and 1.5620 inches maximum
Thread Diameter: 0.375 inches nominal
Thread Quantity Per Inch: 24
Hardness Rating: 55.0 rockwell c minimum and 60.0 rockwell c maximum inner member
Hardness Rating: 26.0 rockwell c minimum and 30.0 rockwell c maximum outer race member
Material: steel comp 440a inner member
Material: steel comp 410 rod end body
Material: steel corrosion resisting race insert
Style Designator: ball type
Thread Series Designator: unf

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
KBE4-31CRW	Rod End Plain Bearing

FAQs

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

What is the FSCG of the NSN 3120-00-881-8631?

The FSCG of the NSN 3120-00-881-8631 is 3120

Does the NSN 3120-00-881-8631 have a Schedule B code assigned?

Yes, the Schedule B code is 8483308055

Does NSN 3120-00-881-8631 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 3120-00-881-8631 contain precious materials?

Precious metal content is unknown

Does NSN 3120-00-881-8631 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 3120-00-881-8631 was assigned to the Federal Catalog?

It was assigned 64 years ago, on Mon, Jan 1, 1962