GB520S4A

View detailed technical data, stock status, and sourcing information for: GB520S4A
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Federal Supply Group

Bearings

Federal Supply Classification

3120 Unmounted Plain Bearings

National Stock Number

3120-00-179-7266

Item Name Code

13208

Assigment Date

01/08/1969 (57 years ago)

0.2140 inches minimum and 0.2190 inches maximum outer member width, 5700 pounds static radial load rating, 0.2495 inches minimum and 0.2500 inches maximum bore diameter, 0.7495 inches minimum and 0.7500 inches maximum outer member outside diameter, 0.2760 inches minimum and 0.2810 inches maximum inner 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: 0.2495 inches minimum and 0.2500 inches maximum
Outer Member Outside Diameter: 0.7495 inches minimum and 0.7500 inches maximum
Outer Member Width: 0.2140 inches minimum and 0.2190 inches maximum
Inner Member Width: 0.2760 inches minimum and 0.2810 inches maximum
Static Radial Load Rating: 5700 pounds
Hardness Rating: 56.0 rockwell c minimum inner member
Hardness Rating: 28.0 rockwell c minimum outer race member
Material: plastic polytetrafluoroethylene race liner
Material: steel comp 440c inner member
Material: steel comp 410 outer race member
Style Designator: with insert and/or liner

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
3120-00-230-4777	No Name Available	06/01/1991
3120-00-472-2687	No Name Available	09/01/1998

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
76588-041	Self-Aligning Plain Bearing
ATB4-5	Self-Aligning Plain Bearing
BLFN4-361	Self-Aligning Plain Bearing
GB520S4A	Self-Aligning Plain Bearing
KSBN4-41	Self-Aligning Plain Bearing
LHSSV4AD	Self-Aligning Plain Bearing

FAQs

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

What is the FSCG of the NSN 3120-00-179-7266?

The FSCG of the NSN 3120-00-179-7266 is 3120

Does the NSN 3120-00-179-7266 have a Schedule B code assigned?

Yes, the Schedule B code is 8482300040

Does NSN 3120-00-179-7266 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 3120-00-179-7266 contain precious materials?

Item does not contain precious metal.

Does NSN 3120-00-179-7266 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 3120-00-179-7266 was assigned to the Federal Catalog?

It was assigned 57 years ago, on Wed, Jan 8, 1969