SM4-4B

View detailed technical data, stock status, and sourcing information for: SM4-4B
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Federal Supply Group

Bearings

Federal Supply Classification

3110 Unmounted Antifriction Bearings

National Stock Number

3110-00-053-9377

Item Name Code

00050

Assigment Date

01/01/1961 (65 years ago)

A special single or multiple-row roller bearing, rigid or self-aligning, and constructed with either inside threaded, plain hollow, maile threaded, or solid shank.

3a thread class, 1.9930 inches nominal overall length, externally threaded shank style, right-hand thread direction, 0.2500 inches nominal shank 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 Diameter: 0.2500 inches nominal
Shank Style: externally threaded
Overall Length: 1.9930 inches nominal
Bore Diameter: 0.2500 inches nominal
Overall Outside Diameter: 0.8000 inches nominal
Shank Thread Length: 0.8120 inches nominal
Outer Ring Width: 0.3500 inches nominal
Inner Ring Width: 0.5930 inches nominal
Length From Bore Center To Shank End: 1.6080 inches nominal
Seal Quantity: 2
Shield Quantity: 2
Bearing Seal Type: contact
Alignment Type: self-aligning
Self-Alignment Location: internal
Thread Quantity Per Inch: 28
Nominal Thread Size: 0.250 inches
Self-Alignment Angle: 10.00 degrees nominal
Special Features: 0.0670 in. w by 0.0490 in. deep by 0.6900 in. lg keyway in shank,nas516-1 grease fitting,accepts nas513-4 lockwasher
Lubrication Material: grease
Lubrication Material Document And Classification: mil-g-23827 mil spec single material response
Material: rubber butadiene-acrylonitrile class nbr seal
Material: steel comp 430 shield
Material: steel comp 4620 rod end body
Material: steel snap ring
Material: steel comp e52100 inner ring
Material: steel comp e52100 roller
Material Document And Classification: mil-s-7420 mil spec single material response inner ring
Material Document And Classification: mil-s-7420 mil spec single material response roller
Material Document And Classification: mil-s-7493 mil spec single material response rod end body
Material Document And Classification: qq-s-763 fed spec single material response shield
Surface Treatment: cadmium all external/exposed metal surfaces
Surface Treatment Document And Classification: qq-p-416,ty 1,cl 2 fed spec single treatment response all external/exposed metal surfaces
Style Designator: single row, concave rollers
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
SM4-4B	Rod End Roller Bearing
SM4-4B1-501	Rod End Roller Bearing

FAQs

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

What is the FSCG of the NSN 3110-00-053-9377?

The FSCG of the NSN 3110-00-053-9377 is 3110

Does the NSN 3110-00-053-9377 have a Schedule B code assigned?

Yes, the Schedule B code is 8482500000

Does NSN 3110-00-053-9377 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 3110-00-053-9377 contain precious materials?

Item does not contain precious metal.

Does NSN 3110-00-053-9377 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 3110-00-053-9377 was assigned to the Federal Catalog?

It was assigned 65 years ago, on Sun, Jan 1, 1961