PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS27640-5RBearing,ball,airframe

Sae International Dba Sae International · NSN 3110-01-133-9539 · FSC 3110 · No Item Name Available
Verified by PartsTable
NSN 3110-01-133-9539 — this item is cataloged by the U.S. Government under National Stock Number 3110-01-133-9539. Primary manufacturer part number: MS27640-5R.
Features
  • Bearing,ball,airframe — FSC 3110
  • Bore Diameter: 0.3122 INCHES MINIMUM AND 0.3125 INCHES MAXIMUM IN
  • Overall Outside Diameter: 1.2496 INCHES MINIMUM AND 1.2500 INCHES MAXIMUM IN
  • Outer Ring Width: 0.3700 INCHES MINIMUM AND 0.3750 INCHES MAXIMUM IN
  • Bearing Seal Type: CONTACT
  • Load Direction: RADIAL
  • Inner Ring Width: 0.5555 INCHES MINIMUM AND 0.5580 INCHES MAXIMUM IN
  • Seal Quantity: 2
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Steel Ball construction
General Description

The Bearing,ball,airframe, cataloged under National Stock Number 3110-01-133-9539, is classified within Federal Supply Class 3110 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Sae International Dba Sae International. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3110-01-133-9539
Primary Part NumberMS27640-5R
Item NameBearing,ball,airframe
FSC / FSG3110 / 31 — No Item Name Available
ManufacturerSae International Dba Sae International
StatusACTIVE
Bore Diameter0.3122 INCHES MINIMUM AND 0.3125 INCHES MAXIMUM IN
Overall Outside Diameter1.2496 INCHES MINIMUM AND 1.2500 INCHES MAXIMUM IN
Outer Ring Width0.3700 INCHES MINIMUM AND 0.3750 INCHES MAXIMUM IN
Bearing Seal TypeCONTACT
Load DirectionRADIAL
Inner Ring Width0.5555 INCHES MINIMUM AND 0.5580 INCHES MAXIMUM IN
Seal Quantity2
Lubrication MaterialGREASE
MaterialSTEEL BALL
Lubrication Material Document and ClassificationMIL-G-81322 MIL SPEC SINGLE MATERIAL RESPONSE
MaterialPLASTIC RETAINER
MaterialSTEEL INNER RING
Style DesignatorSINGLE ROW INNER RING EXTENDED BOTH SIDES
Surface TreatmentCADMIUM ALL EXTERNAL/EXPOSED METAL SURFACES
MaterialPLASTIC POLYTETRAFLUOROETHYLENE SEAL
MaterialSTEEL OUTER RING
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
3110-00-023-4022MS27640-10 INTERCHANGEABLE
Bearing,ball,airframe
Sae International Dba Sae International
3110-00-023-4799MS27640-3 INTERCHANGEABLE
Bearing,ball,airframe
Sae International Dba Sae International
3110-00-023-4810MS27640-3A INTERCHANGEABLE
Bearing,ball,airframe
Sae International Dba Sae International
3110-00-023-6669MS27640-4 INTERCHANGEABLE
Bearing,ball,airframe
Sae International Dba Sae International
3110-00-023-7007MS27640-5 INTERCHANGEABLE
Bearing,ball,airframe
Sae International Dba Sae International
3110-00-023-7979MS27640-6 INTERCHANGEABLE
Bearing,ball,airframe
Sae International Dba Sae International
3110-00-027-3401MS27640-8 INTERCHANGEABLE
Bearing,ball,airframe
Sae International Dba Sae International
3110-00-142-4318KS8 INTERCHANGEABLE
Bearing,ball,airframe
Fag Bearings Corporation
3110-00-801-0316BACB10FT04JP INTERCHANGEABLE
Bearing,ball,airframe
The Boeing Company Div Defense
3110-01-174-8296MS27640-4G INTERCHANGEABLE
Bearing,ball,airframe
Sae International Dba Sae International
Cross-Reference Index
Part NumberManufacturer
MKP5 New Hampshire Ball Bearings Inc Div Hitech Division (USA)
MKP5FS464 Timken Co Div the Timken Company (USA)
MS27640-5R PRIMARY Sae International Dba Sae International (USA)
MS27640-5R Society of Automotive Engineers Inc (USA)
AS27640 Society of Automotive Engineers Inc (USA)
MKP5 Timken Co Div the Timken Company (USA)
AS27640 Sae International Dba Sae International (USA)
Related Parts
3110-00-023-4022INTERCHANGEABLE
BEARING,BALL,AIRFRAME
MS27640-10
3110-00-023-4799INTERCHANGEABLE
BEARING,BALL,AIRFRAME
MS27640-3
3110-00-023-4810INTERCHANGEABLE
BEARING,BALL,AIRFRAME
MS27640-3A
3110-00-023-6669INTERCHANGEABLE
BEARING,BALL,AIRFRAME
MS27640-4
3110-00-023-7007INTERCHANGEABLE
BEARING,BALL,AIRFRAME
MS27640-5
3110-00-023-7979INTERCHANGEABLE
BEARING,BALL,AIRFRAME
MS27640-6
3110-00-027-3401INTERCHANGEABLE
BEARING,BALL,AIRFRAME
MS27640-8
3110-00-142-4318INTERCHANGEABLE
BEARING,BALL,AIRFRAME
KS8
3110-00-801-0316INTERCHANGEABLE
BEARING,BALL,AIRFRAME
BACB10FT04JP
3110-01-174-8296INTERCHANGEABLE
BEARING,BALL,AIRFRAME
MS27640-4G

Frequently Asked Questions

What is NSN 3110-01-133-9539?

NSN 3110-01-133-9539 is a Bearing,ball,airframe, manufactured by Sae International Dba Sae International, classified under FSC 3110 (No Item Name Available). Status: active.

What are the part numbers for NSN 3110-01-133-9539?

NSN 3110-01-133-9539 has 7 cross-referenced part numbers: MKP5 (New Hampshire Ball Bearings Inc Div Hitech Division), MKP5FS464 (Timken Co Div the Timken Company), MS27640-5R (Sae International Dba Sae International), MS27640-5R (Society of Automotive Engineers Inc), AS27640 (Society of Automotive Engineers Inc) and 2 more.

What NSN replaces 3110-01-133-9539?

There are 10 known substitutes for 3110-01-133-9539: 3110-00-023-4022, 3110-00-023-4799, 3110-00-023-4810 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MS27640-5R?

Key specifications for MS27640-5R: Bore Diameter: 0.3122 INCHES MINIMUM AND 0.3125 INCHES MAXIMUM IN; Overall Outside Diameter: 1.2496 INCHES MINIMUM AND 1.2500 INCHES MAXIMUM IN; Outer Ring Width: 0.3700 INCHES MINIMUM AND 0.3750 INCHES MAXIMUM IN; Bearing Seal Type: CONTACT. 17 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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