SM4-4B

SM44B Roller Rod End Bearing

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Quality Commitment

Serving our customers with quality and safety first.

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AS9120 Certified by SAI Global

Datasheet. SM4-4B specification

Thread Class
A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.

3a

Thread Direction
The direction of the thread when viewed axially. a right-hand thread winds in a clockwise direction while a left-hand thread winds in a counterclockwise direction.

RIGHT-Hand

Shank Diameter
The length of a straight line which passes through the center of the body of the shank and terminates at the circumference.

0.2500in.

Shank Style
The style designation indicating the configuration that most nearly corresponds to the appearance of the shank.

651 externally threaded

Overall Length
The dimension measured along the longitudinal axis with terminated points at the extreme ends of the item.

1.9930in.

Bore Diameter
The length of a straight line which passes through the center of a circular bore,and terminates at the circumference.

0.2500in.

Overall Outside Diameter
The overall length of a straight line which passes through the center of an item,and terminates at the outside circumference.

0.8000in.

Lubrication Material
The element,compound,or mixture with which the item is lubricated.

grease

Shank Thread Length

0.8120in.

Outer Ring Width

0.3500in.

Inner Ring Width

0.5930in.

Length From Bore Center To Shank End

1.6080in.

Seal Quantity
The number of seals included on the item.

2

Shield Quantity
The number of shields included on the item.

2

Bearing Seal Type
Indicates the type of seal provided with the bearing.

contact

Alignment Type
Indicates the type of alignment utilized whereby the item will adjust axially for misalignment.

SELF-Aligning

Self-alignment Location
Indicates the location of the self-alignment feature.

internal

Thread Quantity Per Inch
The number of threads on the item per linear inch measured on a line parallel to the thread axis.

28

Nominal Thread Size
A designation that is used for the purpose of general identification of the thread.

0.250in. ⁓1/4"

Self-alignment Angle

10.00 degrees

Special Features
Those unusual or unique characteristics or qualities of an item not covered in the other requirements and which are determined to be essential for identification.

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 Document And Classification
The specification,standard,or manufacturers reference,and the classification designation,such as class,condition,temper,and the like,that identifies the lubrication material.

MIL-G-23827 mil spec single material response

Material
The chemical compound or mechanical mixture properties of which the item is fabricated.

rubber BUTADIENE-Acrylonitrile class nbr seal

Material
The chemical compound or mechanical mixture properties of which the item is fabricated.

steel comp 430 shield

Material
The chemical compound or mechanical mixture properties of which the item is fabricated.

steel comp E52100 inner ring

Material
The chemical compound or mechanical mixture properties of which the item is fabricated.

steel comp E52100 roller

Material
The chemical compound or mechanical mixture properties of which the item is fabricated.

steel comp 4620 rod end body

Material
The chemical compound or mechanical mixture properties of which the item is fabricated.

steel snap ring

Material Document And Classification
The specification,standard,or manufacturers reference,and the classification designation,such as class,condition,temper,and the like,that identifies the material.

MIL-S-7420 mil spec single material response inner ring

Material Document And Classification
The specification,standard,or manufacturers reference,and the classification designation,such as class,condition,temper,and the like,that identifies the material.

MIL-S-7420 mil spec single material response roller

Material Document And Classification
The specification,standard,or manufacturers reference,and the classification designation,such as class,condition,temper,and the like,that identifies the material.

MIL-S-7493 mil spec single material response rod end body

Material Document And Classification
The specification,standard,or manufacturers reference,and the classification designation,such as class,condition,temper,and the like,that identifies the material.

QQ-S-763 fed spec single material response shield

Surface Treatment
The metallic,nonmetallic,and/or chemical properties with which the item is plated,dipped,and/or coated.the treatment is designed to protect the surface(s) and cannot be wiped off.

cadmium all external/exposed metal surfaces

Surface Treatment Document And Classification
The specification,standard,or manufacturers reference,and the classification designation,such as type,class,grade,and the like,that identifies the surface treatment material.

QQ-P-416, ty 1, cl 2 fed spec single treatment response all external/exposed metal surfaces

Style Designator
The style designation indicating the configuration that most nearly corresponds to the appearance of the item.

single row, concave rollers

Thread Series Designator
A designation distinguishing one group of thread diameter-pitch combinations from another by the number of threads per measurement scale for a specific diameter.

unjf

Answers.

What quantity is this sold in?

1EA

What class is the thread series?

Unjf

What is the style?

Single row, concave rollers

What material is the roller rod end bearing made of ?

Steel snap ring

What material is the roller rod end bearing made of ?

Steel comp 4620 rod end body

What material is the roller rod end bearing made of ?

Steel comp e52100 roller

What material is the roller rod end bearing made of ?

Steel comp e52100 inner ring

What material is the roller rod end bearing made of ?

Steel comp 430 shield

What material is the roller rod end bearing made of ?

Rubber butadiene-acrylonitrile class nbr seal

What is the thread quantity per inch?

28

What is the thread direction?

Right-hand

What is the thread class?

3a

What is the NSN for SM4-4B?

3110-00-053-9377

How is this classified for shipping?

Schedule B number: 8482500000
nmfc 114820
Other cylindrical roller bearings

What's the federal classification of SM4-4B?

FSC 3110 ⁓ Bearings, antifriction, unmounted

Note-this class includes bearings that generally have roller or balls confined by an inner and outer ring to relieve friction in/on/around rotating/moving mechanisms.

Excluding plain bearings (fsc 3120); jewel bearings (fsc 3120)

NSN 3110-00-053-9377 BEARING,ROLLER,ROD END

unjf thread series single row, concave rollers cadmium all external/exposed metal surfaces surface treated 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 28 thread quantity per inch 0.2500" bore diameter 1.9930" overall length right-hand 3a thread class

NIIN
000539377
NIIN Date
01/01/61
Schedule B
8482500000 
Name Code
00050
FIIG
A044A0
QUP
Historical Price
$717.40 EA
DEMIL / ITAR
Uncontrolled item (Code A)
Hazmat
No hazard information available from HMIRS.
MSDS
N/A
Precious Metals
No precious metals
Enviromental
N/A
Electrostatic ESD & EMI
No ESD or EMI sensitivity

Other Part Numbers Parts with same form, fit, and function by other manufacturers

1. SM4-4B1-501 Cage 77896

Major End Users Countries and entities

  • - Department of The Navy 

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Shipping Information

Special Handling
Other or no special handling required (sh) 
LTL (less than a truck load rating)
77.5 
LCL (less than a car load rating)
77.5
Special Cargo
No special type of cargo code applicable 
Air Freight (Minimum cargo door size required)
Shipment is not a consolidation and does not exceed 84 inches in any dimension. 
Customs Requirement Classification
Trailers, vehicles, machinery, shop and warehouse equipment and supplies including special tools and equipment, ground servicing 
Commodity (for shipments via water)
Bearings 
NMFC (national motor freight code)
114820 BEARINGS/BUSHINGS NOI BALL/ROLLER 
UFC (universal freight code)
58860 

Similar by Design Other bearings with similar characteristics

Nothing similar to this part number was found in our inventory

SM4-4B / Bearing,roller,rod endWhat is the formal definition of this item?

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.