B538DDFS381

View detailed technical data, stock status, and sourcing information for: B538DDFS381
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Federal Supply Group

Bearings

Federal Supply Classification

3110 Unmounted Antifriction Bearings

National Stock Number

3110-01-053-6525

Item Name Code

00014

Assigment Date

01/08/1978 (48 years ago)

A tubular shaped item with or without flange(s) designed to reduce friction and carry a kinetic load on the surface(s) parallel to the axis of the bore. It must have a visible or detectable means of lubrication or be self-lubricated. The over all length must exceed 25 percent of the outside diameter or the shortest distance between peripheral flats of the body, except for straight tubular (without flange or shoulder) items having a bearing surface(s) parallel to the axis of the bore only. Includes items which are divided into two or more segments which include 180 degrees (3.141 radians) or less of the bearing periphery. See also bushing, sleeve; spacer, sleeve; and washer (as modified). Excludes:pin, hollow.

0.6243 inches minimum and 0.6257 inches maximum bore diameter, 1.0615 inches minimum and 1.0625 inches maximum overall outside diameter, ground surface finish, 0.2450 inches minimum and 0.2500 inches maximum outer ring width, 0.2760 inches minimum and 0.2810 inches maximum inner ring 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: 0.6243 inches minimum and 0.6257 inches maximum
Overall Outside Diameter: 1.0615 inches minimum and 1.0625 inches maximum
Outer Ring Width: 0.2450 inches minimum and 0.2500 inches maximum
Inner Ring Width: 0.2760 inches minimum and 0.2810 inches maximum
Surface Finish: ground
Seal Quantity: 2
Bearing Seal Type: contact
Load Direction: radial
Bore Shape: straight
Lubrication Material: grease
Lubrication Material Document And Classification: mil-g-81322 mil spec single material response
Material: plastic polytetrafluoroethylene seal
Material: steel comp e52100 ball
Material: steel comp e52100 inner ring
Material: steel comp e52100 outer ring
Style Designator: non-loading groove, non-separable

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
6157-P-52-13	Annular Ball Bearing
AS27646-38	Annular Ball Bearing
B538DDFS381	Annular Ball Bearing
B538DDFS464	Annular Ball Bearing

FAQs

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

What is the FSCG of the NSN 3110-01-053-6525?

The FSCG of the NSN 3110-01-053-6525 is 3110

Does the NSN 3110-01-053-6525 have a Schedule B code assigned?

Yes, the Schedule B code is 8482105028

Does NSN 3110-01-053-6525 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 3110-01-053-6525 contain precious materials?

Item does not contain precious metal.

Does NSN 3110-01-053-6525 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 3110-01-053-6525 was assigned to the Federal Catalog?

It was assigned 48 years ago, on Sun, Jan 8, 1978