PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS27640-8GBearing,ball,airframe

Sae International Dba Sae International · NSN 3110-00-142-4318 · FSC 3110 · No Item Name Available
Verified by PartsTable
NSN 3110-00-142-4318 — this item is cataloged by the U.S. Government under National Stock Number 3110-00-142-4318. Primary manufacturer part number: MS27640-8G.
Features
  • Bearing,ball,airframe — FSC 3110
  • Alignment Type: SELF-ALIGNING
  • Outer Ring Width: 0.4950 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN
  • Self-Alignment Location: INTERNAL
  • Inner Ring Width: 0.6150 INCHES MINIMUM AND 0.6200 INCHES MAXIMUM IN
  • Load Direction: RADIAL
  • Shield Quantity: 2
  • Lubrication Material Document and Classification: MIL-G-23827 MIL SPEC SINGLE MATERIAL RESPONSE
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Steel Comp E52100 Outer Ring construction
General Description

The Bearing,ball,airframe, cataloged under National Stock Number 3110-00-142-4318, 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 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 21 commercial cross-references from 13 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3110-00-142-4318
Primary Part NumberMS27640-8G
Item NameBearing,ball,airframe
FSC / FSG3110 / 31 — No Item Name Available
ManufacturerSae International Dba Sae International
StatusACTIVE
Alignment TypeSELF-ALIGNING
Outer Ring Width0.4950 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN
Self-Alignment LocationINTERNAL
Inner Ring Width0.6150 INCHES MINIMUM AND 0.6200 INCHES MAXIMUM IN
Load DirectionRADIAL
Shield Quantity2
Lubrication Material Document and ClassificationMIL-G-23827 MIL SPEC SINGLE MATERIAL RESPONSE
MaterialSTEEL COMP E52100 OUTER RING
Bore Diameter0.4950 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN
Overall Outside Diameter0.6870 INCHES MINIMUM AND 0.6875 INCHES MAXIMUM IN
Material Document and Classification66 FED STD SINGLE MATERIAL RESPONSE INNER RING
MaterialSTEEL COMP E51100 OR STEEL COMP E52100 BALL
MaterialSTEEL CORROSION RESISTING OR STEEL SHIELD
Surface Treatment Document and ClassificationQQ-P-416,CL 2 FED SPEC SINGLE TREATMENT RESPONSE SHIELD
MaterialSTEEL COMP E52100 INNER RING
Material Document and Classification66 FED STD SINGLE MATERIAL RESPONSE OUTER RING
Surface TreatmentCADMIUM SHIELD
Material Document and Classification66 FED STD ALL MATERIAL RESPONSES BALL
Style DesignatorSINGLE ROW SELF ALIGNING SINGLE ROW INNER RING EXTENDED BOTH SIDES
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
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
3110-00-042-4833MS27645-8 INTERCHANGEABLE
Bearing,ball,airframe
Sae International Dba Sae International
3120-00-675-5270RB-8AS INTERCHANGEABLE
Bearing,plain,self-Aligning
Radial Bearing Corporation Dba Radial Bearing Corp of Connecticu Div Radial Bearing Llc
3110-00-801-0316BACB10FT04JP INTERCHANGEABLE
Bearing,ball,airframe
The Boeing Company Div Defense
Cross-Reference Index
Part NumberManufacturer
MS27640-8G PRIMARY Sae International Dba Sae International (USA)
KS8LTG75A PRIMARY Fag Bearings Corporation (USA)
KS8 Schatz Bearing Corporation Dba Schatz Bearing Corp (USA)
AS27640 Society of Automotive Engineers Inc (USA)
69984 Arma Div Ambac Industries Inc
AN200KS8 Air Force-Navy Aeronautical Specifications Promulgated by Aeronautical Standards Group
AN200KS8ANG25 Joint Aircraft Committee (USA)
KS8FS50125 Timken Co Div the Timken Company (USA)
MS27640 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MS27640-8G Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
AS27640 Sae International Dba Sae International (USA)
KS8FS50125 Rbc Aircraft Products, Inc. (USA)
MS27640-8G Society of Automotive Engineers Inc (USA)
KS8FS160 Rbc Aircraft Products, Inc. (USA)
KS8ANG25 Schatz Bearing Corporation Dba Schatz Bearing Corp (USA)
KS8FS160 Timken Co Div the Timken Company (USA)
AN200KS8 Aeronautical Standards Group Dept of Navy and Air Force (USA)
KS8 PRIMARY Fag Bearings Corporation (USA)
SKR2698 Skf Industries Inc Nice Bearing Products Div (USA)
KS8 PRIMARY Skf Usa Inc. (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
3110-00-042-4833INTERCHANGEABLE
BEARING,BALL,AIRFRAME
MS27645-8
3120-00-675-5270INTERCHANGEABLE
BEARING,PLAIN,SELF-ALIGNING
RB-8AS
3110-00-801-0316INTERCHANGEABLE
BEARING,BALL,AIRFRAME
BACB10FT04JP
3110-01-133-9539INTERCHANGEABLE
BEARING,BALL,AIRFRAME
MS27640-5R
3110-01-174-8296INTERCHANGEABLE
BEARING,BALL,AIRFRAME
MS27640-4G

Frequently Asked Questions

What is NSN 3110-00-142-4318?

NSN 3110-00-142-4318 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 3110-00-142-4318?

NSN 3110-00-142-4318 has 21 cross-referenced part numbers: MS27640-8G (Sae International Dba Sae International), KS8LTG75A (Fag Bearings Corporation), KS8 (Schatz Bearing Corporation Dba Schatz Bearing Corp), AS27640 (Society of Automotive Engineers Inc), 69984 (Arma Div Ambac Industries Inc) and 16 more.

What NSN replaces 3110-00-142-4318?

There are 12 known substitutes for 3110-00-142-4318: 3110-00-023-4022, 3110-00-023-4799, 3110-00-023-4810 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MS27640-8G?

Key specifications for MS27640-8G: Alignment Type: SELF-ALIGNING; Outer Ring Width: 0.4950 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN; Special Features: 10.0 DEG SELF ALIGNMENT IN EITHER DIRECTION; EXPOSED SURFACE,CADMIUM,QQ-P-416,CL 2; Self-Alignment Location: INTERNAL. 20 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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