251531

251531 Ball Airframe Bearing

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Datasheet. 251531 specification

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

1.5620in. and 1.5630in.

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

2.4990in. and 2.5000in.

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

grease

Outer Ring Width

0.3700in. and 0.3750in.

Inner Ring Width

0.4320in. and 0.4370in.

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

Load Direction
The direction of load with respect to the shaft axis.

radial

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

external

Features Provided
Those features,not otherwise specified,which may be required for proper functioning of the item.

aligning ring

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.

exposed surfaces as mounted cadmium plated

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.

steel comp 440c

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

single row inner ring extended both sides

Answers.

What quantity is this sold in?

1EA

What is the style?

Single row inner ring extended both sides

What material is the ball airframe bearing made of ?

Steel comp 440c

What is the NSN for 251531?

3110-00-240-0003

How is this classified for shipping?

Schedule B number: 8482105068
nmfc 114850
Ball bearings

What's the federal classification of 251531?

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 3110-00-240-0003 BEARING,BALL,AIRFRAME

single row inner ring extended both sides exposed surfaces as mounted cadmium plated 1.5620" bore diameter

NIIN
002400003
NIIN Date
11/14/69
Schedule B
8482105068 
Name Code
00041
FIIG
A044A0
Item Weight
0.100lbs
Item Dimensions
--
QUP
Historical Price
$694.43 EA
DEMIL / ITAR
Uncontrolled item (Code A)
Hazmat
No hazard information available from HMIRS.
MSDS
N/A
Precious Metals
Metal content unknown
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. KP25BS Cage 06144
2. KP25BS Cage 21335

Major End Users Countries and entities

  • - Department of The Air Force 
  • - Department of The Navy 
  • - Poland 
  • - Brazil 

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Shipping Information

Special Handling
Other or no special handling required (sh) 
LTL (less than a truck load rating)
70.0 
LCL (less than a car load rating)
65.0
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)
114850 BEARING/BUSHING O/T BALL/ROLLER I/S 
UFC (universal freight code)
58880 

Similar by Design Other bearings with similar characteristics

Nothing similar to this part number was found in our inventory

251531 / Bearing,ball,airframeWhat is the formal definition of this item?

A cylindrical item in which the inner or outer ring turns upon row(s) of hardened ball, bearing which roll on a raceway, thus minimizing friction. these items are characterized by their noncorrosive qualities, lightness of weight, inch dimensions rather than metric, inner rings generally projecting beyond the faces of the outer ring, or a very narrow width inner ring having an outside diameter slightly larger than the bore diameter. designed primarily for use in aircraft assemblies, such as control systems and surfaces of aircraft. excludes bearing, ball, annular.