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Airframe Ball Bearing

NSN: 3110-00-042-0998 | Model: AS27642

A cylindrical item in which the inner or outer ring turns upon ro (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.

NSN Properties and Flags
NATO Stock Number
Bore Diameter
3.0630 inches
Overall Outside Diameter
4.0000 inches
Lubrication Material
Outer Ring Width
0.4690 inches
Inner Ring Width
0.5310 inches
Seal Quantity
Bearing Seal Type
Load Direction
Standard Tolerance Designation
Afbma standard tolerance for airframe ball bearings
Special Features
X80 pct. Full of mil-g-81322, heat treat rings and balls to rockwell c 60 to 66 and stabilized for operation at 250 deg. F, radial and lateral eccentricity, inner ring 0.0010 in. Outer ring 0.0016 in., 0.0003-0.0010 in. Radial clearance
Lubrication Material Specification
Mil-g-81322 military specification single material response
Steel comp e51100 or steel comp e52100 ball
Material Specification
Ams 3652 assn standard single material response or ams 3666 assn standard single material response seal
Surface Treatment
Cadmium exposed surfaces as mounted
Surface Treatment Specification
Qq-p-416, type 1, cl 2 federal specification single treatment response exposed surfaces as mounted
Style Designator
Single row inner ring extended both sides
Recent Solicitations
Solicitation Return by Date Buyer Code Quantity
SPE4A618T88D7 2018-09-17 PARAV 640 EA
SPE4A618T60E2 2018-08-15 PARAV 419 EA

Inventory Check

The last inventory check on this NSN was done on 09/23/2021. Due to rapid changes in inventory this may not be the current stock qty.

  • New Surplus: 21
  • New: 327
  • As Removed: 1
  • Serviceable: 1
  • Overhauled: 1

Pricing and Availability

Send us a request for quote using the form below. Our team will contact you with an up to date pricing and availability quote ASAP.

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NSN 3110-00-042-0998 Datasheet

Supply Class (FSC):
Unmounted Antifriction Bearings
Cross Reference:
  • AS27642
  • AS27642-49
  • MS27642-49
  • WA-134-99
  • KP49BD
  • KP49B85
  • KP49BFS464
  • KP49BFS464
  • MS27642-49
  • AN202KP49B
  • KP49BFS428
  • KPB FS464
  • 67A98B194
  • 309-1264-010
  • KP49BKSSA1722
  • KP-49-B-3
  • KP49BKSSA1722
Cage Codes:
  • Society Of Automotive Engineers Inc (CAGE 81343)
  • Eastern Llc Breeze (CAGE 08484)
  • Schatz Bearing Corporation (CAGE 21760)
  • Skf Usa Inc. (CAGE 38443)
  • Timken Company, The (CAGE 21335)
  • Industrial Tectonics Bearings (CAGE 06144)
  • Military Standards (CAGE 96906)
  • Navy Aeronautical Air Force (CAGE 81352)
  • Naval Air Systems Command (CAGE 30003)
  • Rockwell Collins, Inc. (CAGE 13499)
  • 3110-00-042-0998 replaces 3110-01-045-6658
  • 3110-00-042-0998 replaces 3110-01-078-2408
Schedule B & Trade:
  • Schedule B: 8482105068 (NAICS 332991)

    Ball bearings, nesoi

  • SITC: 74610

    Ball bearings

  • End Use: 21180

    Industrial machines, other


N - Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.


A - Item does not contain precious metal.


- Represents items with no adp components


- The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.

Freight Information:
  • NMFC:

    114820 - Bearings/bushings noi ball/roller

  • WCC:

    742 - Bearings

  • SHC:

    9 - Other or no special handling required (sh)

  • ADC:

    A - Shipment is not a consolidation and does not exceed 84 inches in any dimension.

  • LTL:

    P - 77.5

  • ACC:

    V - Trailers, vehicles, machinery, shop and warehouse equipment and supplies including special tools and equipment, ground servicing

  • TCC:

    Z - No special type of cargo code applicable

NSN Management Codes:
  • SOS
  • AAC
  • Quantity per pack
  • Unit of Measure
  • Shelf Life
  • Classification Control
  • Repariability
    This is a nonreparable item. if condemned or economically unserviceable, then dispose at the level authorized replace the item.

Questions & Answers:

What are the historical prices recorded for this stock number?
Historical data shows pricing from $463.52 to $772.54..
Does NSN 3110-00-042-0998 have a shelf life?
No. There is no shelf life applicable for this NSN.
What NATO entities are users of this NSN?
Department Of The Army, Department Of The Air Force, Department Of The Navy, Poland, Brazil, Spain, Israel, Singapore, Australia, New Zealand, Germany, Republic Of Korea, Norway, Greece, and Turkey
What is the NIIN of NSN 3110-00-042-0998?
000420998 or 00-042-0998
Does NSN 3110-00-042-0998 require demilitarization?
Yes - ITAR Controlled
What is the most recent solicitation for NSN 3110-00-042-0998?
Solicitation SPE4A618T88D7 for qty 640 on 09/10/2018
When was this national stock number assigned to the federal catalog?
Jan 13, 1972