HSB4-138 Self-Aligning Plain Bearing

Comprehensive specifications and application details for: HSB4-138 Self-Aligning Plain Bearing.

Summary

Explore detailed summary information for bearing: HSB4-138. Includes NSN, classification group, and identification codes to support sourcing, compliance, and accurate part tracking.

Part Number
HSB4-138
Federal Supply Classification
3120 Unmounted Plain Bearings
(NSN) National Stock Number
3120-01-135-6517
Item Name Code
13208
Federal Item Identification Guide
A045A0
Assigment Date
07/28/1982

A detachable assembly in or on which a journal, gudgeon, pivot, or the like moves. It is used to carry a load and to reduce sliding friction. It does not employ rolling elements. The item consists of a bored precision ground ball (or spherical plain bearing) around which an outer ring is fitted. The assembly may be either separable or nonseparable. Excludes:bearing, plain, rod end and bearing, plain, spherical.

mil-l-6085 mil spec single material response lubrication material document and classification, 0.2495 inches minimum and 0.2500 inches maximum bore diameter, 0.3380 inches minimum and 0.3430 inches maximum inner member width, 0.6557 inches minimum and 0.6562 inches maximum outer member outside diameter, oil lubricating lubrication material

Datasheet

Below are the comprehensive technical specifications for bearing: 3120-01-135-6517 . Find dimensions, materials, tolerances, performance characteristics, etc.

Bore Diameter
0.2495 inches minimum and 0.2500 inches maximum
Inner Member Width
0.3380 inches minimum and 0.3430 inches maximum
Material Document And Classification
mil-l-6085 mil spec single material response lubrication
Material
oil lubricating lubrication
Outer Member Outside Diameter
0.6557 inches minimum and 0.6562 inches maximum
Outer Member Width
0.2450 inches minimum and 0.2550 inches maximum
Precious Material And Location
internal outer member silver
Precious Material
silver
Static Radial Load Rating
6340 pounds
Special Features
surface treatment of inner race member 0.0002 in. min thk; surface treatment of outer race member 0.0003 in. min thk; 0.0020 in. max radial play

Frequently Asked Questions

Find quick answers to common questions about bearing: HSB4-138. Explore technical specifications, installation tips, maintenance guidelines, regulatory requirements, and troubleshooting advice.

What is the FSCG of the NSN 3120-01-135-6517?
The FSCG of the NSN 3120-01-135-6517 is 3120
Does the NSN 3120-01-135-6517 have a Schedule B code assigned?
Yes, the Schedule B code is 8482300040
Does NSN 3120-01-135-6517 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 3120-01-135-6517 contain precious materials?
Item contains silver.
Does NSN 3120-01-135-6517 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 3120-01-135-6517 was assigned to the Federal Catalog?
It was assigned 44 years ago, on Wed, Jul 28, 1982

Price & Availability

Fill out the form to get pricing and availability details for the bearing: HSB4-138

Stock Availability

This product is available in the following quantities and conditions:

New Material 58
New Surplus 48
Total 106
Availability of this item was last updated on: 01/15/2026 03:01 PM EST. Availability may have changed since then. Request a quote for up to date pricing and availability.

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