PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS27645-3ABearing,ball,airframe

Society of Automotive Engineers Inc · NSN 3110-00-042-4805 · FSC 3110 · No Item Name Available
Verified by PartsTable
NSN 3110-00-042-4805 — this item is cataloged by the U.S. Government under National Stock Number 3110-00-042-4805. Primary manufacturer part number: MS27645-3A.
Features
  • Bearing,ball,airframe — FSC 3110
  • Lubrication Material Document and Classification: MIL-G-81322 MIL SPEC SINGLE MATERIAL RESPONSE
  • Standard Tolerance Designation: AFBMA STD TOLERANCE FOR AIRFRAME BALL BEARINGS
  • Self-Alignment Location: INTERNAL
  • Seal Quantity: 2
  • Bearing Seal Type: CONTACT
  • Inner Ring Width: 0.2450 INCHES NOMINAL IN
  • Alignment Type: SELF-ALIGNING
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Plastic Polytetrafluoroethylene Seal construction
General Description

The Bearing,ball,airframe, cataloged under National Stock Number 3110-00-042-4805, is classified within Federal Supply Class 3110 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Society of Automotive Engineers Inc. Government technical data includes 27 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 16 commercial cross-references from 8 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN3110-00-042-4805
Primary Part NumberMS27645-3A
Item NameBearing,ball,airframe
FSC / FSG3110 / 31 — No Item Name Available
ManufacturerSociety of Automotive Engineers Inc
StatusCANCELLED
Lubrication Material Document and ClassificationMIL-G-81322 MIL SPEC SINGLE MATERIAL RESPONSE
Standard Tolerance DesignationAFBMA STD TOLERANCE FOR AIRFRAME BALL BEARINGS
Self-Alignment LocationINTERNAL
Seal Quantity2
Bearing Seal TypeCONTACT
Inner Ring Width0.2450 INCHES NOMINAL IN
Alignment TypeSELF-ALIGNING
Load DirectionRADIAL
Outer Ring Width0.2030 INCHES NOMINAL IN
Surface Treatment Document and ClassificationQQ-P-416,TY 1,CL 2 FED SPEC SINGLE TREATMENT RESPONSE INNER RING
Style DesignatorSINGLE ROW SELF ALIGNING SINGLE ROW INNER RING EXTENDED BOTH SIDES
Material Document and ClassificationAMS 3652 ASSN STD SINGLE MATERIAL RESPONSE SEAL
Material Document and Classification66 FED STD SINGLE MATERIAL RESPONSE INNER RING
MaterialPLASTIC POLYTETRAFLUOROETHYLENE SEAL
Surface TreatmentCADMIUM OUTER RING
MaterialSTEEL CORROSION RESISTING RETAINER
Surface TreatmentCADMIUM INNER RING
Bore Diameter0.1900 INCHES NOMINAL IN
Overall Outside Diameter0.6250 INCHES NOMINAL IN
Material Document and Classification66 FED STD ALL MATERIAL RESPONSES BALL
MaterialSTEEL COMP E52100 OUTER RING
MaterialSTEEL COMP E52100 OR STEEL COMP E51100 BALL
Surface TreatmentCADMIUM BALL
Material Document and Classification66 FED STD SINGLE MATERIAL RESPONSE OUTER RING
MaterialSTEEL COMP E52100 INNER RING
Surface Treatment Document and ClassificationQQ-P-416,TY 1,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OUTER RING
Surface Treatment Document and ClassificationQQ-P-416,TY 1,CL 2 FED SPEC SINGLE TREATMENT RESPONSE BALL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
3110-00-042-4803MS27645-10 INTERCHANGEABLE
Bearing,ball,airframe
Sae International Dba Sae International
3110-00-042-4804MS27645-3 INTERCHANGEABLE
Bearing,ball,airframe
Sae International Dba Sae International
3110-00-042-4806 INTERCHANGEABLE
Bearing,ball,airframe
3110-00-042-4807MS27645-4A INTERCHANGEABLE
Bearing,ball,airframe
Sae International Dba Sae International
3110-00-042-4808MS27645-5 INTERCHANGEABLE
Bearing,ball,airframe
Sae International Dba Sae International
3110-00-042-4809MS27645-5A INTERCHANGEABLE
Bearing,ball,airframe
Sae International Dba Sae International
3110-00-042-4810MS27645-6 INTERCHANGEABLE
Bearing,ball,airframe
Sae International Dba Sae International
3110-00-042-4823KSP6A INTERCHANGEABLE
Bearing,ball,airframe
New Hampshire Ball Bearings Inc Div Hitech Division
3110-00-042-4833MS27645-8 INTERCHANGEABLE
Bearing,ball,airframe
Sae International Dba Sae International
3110-00-124-2374MS27645-6G INTERCHANGEABLE
Bearing,ball,airframe
Sae International Dba Sae International
Cross-Reference Index
Part NumberManufacturer
MS27645-3A Society of Automotive Engineers Inc (USA)
KSP3LFS464 Rbc Aircraft Products, Inc. (USA)
KSP3L Skf Usa Inc. (USA)
AS27645-3A Society of Automotive Engineers Inc (USA)
KSP3L New Hampshire Ball Bearings Inc Div Hitech Division (USA)
KSP3L Timken Co Div the Timken Company (USA)
SAE AS27645 Society of Automotive Engineers Inc (USA)
AS27645 Society of Automotive Engineers Inc (USA)
KS3LE6455 Timken Co Div the Timken Company (USA)
KSP3LFS464 Timken Co Div the Timken Company (USA)
MS27645-3A Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
3110000424805 E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales
KSP3L Rbc Aircraft Products, Inc. (USA)
MS27261KSP3L Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
KS3LAXXXX Timken Co Div the Timken Company (USA)
KSP3L Schatz Bearing Corporation Dba Schatz Bearing Corp (USA)
Related Parts
3110-00-042-4803INTERCHANGEABLE
BEARING,BALL,AIRFRAME
MS27645-10
3110-00-042-4804INTERCHANGEABLE
BEARING,BALL,AIRFRAME
MS27645-3
3110-00-042-4806INTERCHANGEABLE
BEARING,BALL,AIRFRAME
3110-00-042-4807INTERCHANGEABLE
BEARING,BALL,AIRFRAME
MS27645-4A
3110-00-042-4808INTERCHANGEABLE
BEARING,BALL,AIRFRAME
MS27645-5
3110-00-042-4809INTERCHANGEABLE
BEARING,BALL,AIRFRAME
MS27645-5A
3110-00-042-4810INTERCHANGEABLE
BEARING,BALL,AIRFRAME
MS27645-6
3110-00-042-4823INTERCHANGEABLE
BEARING,BALL,AIRFRAME
KSP6A
3110-00-042-4833INTERCHANGEABLE
BEARING,BALL,AIRFRAME
MS27645-8
3110-00-124-2374INTERCHANGEABLE
BEARING,BALL,AIRFRAME
MS27645-6G
3110-00-140-9586INTERCHANGEABLE
BEARING,BALL,AIRFRAME
MS27645-3AG
3110-00-142-4313INTERCHANGEABLE
BEARING,BALL,AIRFRAME
MS27645-3G

Frequently Asked Questions

What is NSN 3110-00-042-4805?

NSN 3110-00-042-4805 is a Bearing,ball,airframe, manufactured by Society of Automotive Engineers Inc, classified under FSC 3110 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 3110-00-042-4805?

NSN 3110-00-042-4805 has 16 cross-referenced part numbers: MS27645-3A (Society of Automotive Engineers Inc), KSP3LFS464 (Rbc Aircraft Products, Inc.), KSP3L (Skf Usa Inc.), AS27645-3A (Society of Automotive Engineers Inc), KSP3L (New Hampshire Ball Bearings Inc Div Hitech Division) and 11 more.

What NSN replaces 3110-00-042-4805?

There are 12 known substitutes for 3110-00-042-4805: 3110-00-042-4803, 3110-00-042-4804, 3110-00-042-4806 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MS27645-3A?

Key specifications for MS27645-3A: Lubrication Material Document and Classification: MIL-G-81322 MIL SPEC SINGLE MATERIAL RESPONSE; Standard Tolerance Designation: AFBMA STD TOLERANCE FOR AIRFRAME BALL BEARINGS; Self-Alignment Location: INTERNAL; Seal Quantity: 2. 28 total characteristics are documented in the Federal Logistics Information System.

Is NSN 3110-00-042-4805 still in active supply?

NSN 3110-00-042-4805 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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