PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS51961-5 AND MS51962-4Bearing,roller,needle

American Society for Testing and Materials Dba Astm International · NSN 3110-00-227-3202 · FSC 3110 · No Item Name Available
Verified by PartsTable
NSN 3110-00-227-3202 — this item is cataloged by the U.S. Government under National Stock Number 3110-00-227-3202. Primary manufacturer part number: MS51961-5 AND MS51962-4.
Features
  • Bearing,roller,needle — FSC 3110
  • Retainer Fabrication Method: PRESSED
  • Style Designator: SEPARABLE INNER RACE, WITH ROLLER RETAINER, HARDENED AND GROUND
  • Standard Tolerance Designation: AFBMA STD TOLERANCE FOR INDUSTRIAL NEEDLE BEARINGS
  • Alignment Type: RIGID
  • Bore Diameter: 0.6246 INCHES MINIMUM AND 0.6250 INCHES MAXIMUM IN
  • Material: STEEL INNER RING
  • Surface Finish: GROUND
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Steel Inner Ring construction
General Description

The Bearing,roller,needle, cataloged under National Stock Number 3110-00-227-3202, is classified within Federal Supply Class 3110 (No Item Name Available) of the Bearings group. The primary manufacturer of record is American Society for Testing and Materials Dba Astm International. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN3110-00-227-3202
Primary Part NumberMS51961-5 AND MS51962-4
Item NameBearing,roller,needle
FSC / FSG3110 / 31 — No Item Name Available
ManufacturerAmerican Society for Testing and Materials Dba Astm International
StatusCANCELLED
Retainer Fabrication MethodPRESSED
Style DesignatorSEPARABLE INNER RACE, WITH ROLLER RETAINER, HARDENED AND GROUND
Standard Tolerance DesignationAFBMA STD TOLERANCE FOR INDUSTRIAL NEEDLE BEARINGS
Alignment TypeRIGID
Bore Diameter0.6246 INCHES MINIMUM AND 0.6250 INCHES MAXIMUM IN
MaterialSTEEL INNER RING
Surface FinishGROUND
MaterialCOPPER ALLOY OR STEEL RETAINER
MaterialSTEEL OUTER RING
MaterialSTEEL ROLLER
Overall Outside Diameter1.3745 INCHES MINIMUM AND 1.3750 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 2
3110-00-198-1389ASTM F2431 INTERCHANGEABLE
Ring,bearing,inner
American Society for Testing and Materials Dba Astm International
3110-00-227-3248MS51961-21 INTERCHANGEABLE
Bearing,roller,needle
American Society for Testing and Materials Dba Astm International
Cross-Reference Index
Part NumberManufacturer
HJ142212-1R101412 Timken Aerospace, Inc Dba Torrington Product (USA)
SJ7173-1R7173 Rbc Bearings Incorporated Div West Trenton Division (USA)
MS51961-5 AND MS51962-4 PRIMARY American Society for Testing and Materials Dba Astm International (USA)
ASTM F2246 American Society for Testing and Materials Dba Astm International (USA)
ASTM F2431 American Society for Testing and Materials Dba Astm International (USA)
ESJ7173 Rbc Bearings Incorporated Div West Trenton Division (USA)
SJ7173IR7173 Rbc Bearings Incorporated Div West Trenton Division (USA)
Related Parts
3110-00-198-1389INTERCHANGEABLE
RING,BEARING,INNER
ASTM F2431
3110-00-227-3248INTERCHANGEABLE
BEARING,ROLLER,NEEDLE
MS51961-21

Frequently Asked Questions

What is NSN 3110-00-227-3202?

NSN 3110-00-227-3202 is a Bearing,roller,needle, manufactured by American Society for Testing and Materials Dba Astm International, classified under FSC 3110 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 3110-00-227-3202?

NSN 3110-00-227-3202 has 7 cross-referenced part numbers: HJ142212-1R101412 (Timken Aerospace, Inc Dba Torrington Product), SJ7173-1R7173 (Rbc Bearings Incorporated Div West Trenton Division), MS51961-5 AND MS51962-4 (American Society for Testing and Materials Dba Astm International), ASTM F2246 (American Society for Testing and Materials Dba Astm International), ASTM F2431 (American Society for Testing and Materials Dba Astm International) and 2 more.

What NSN replaces 3110-00-227-3202?

There are 2 known substitutes for 3110-00-227-3202: 3110-00-198-1389, 3110-00-227-3248. Verify interchangeability with system specifications before substitution.

What are the specifications of MS51961-5 AND MS51962-4?

Key specifications for MS51961-5 AND MS51962-4: Retainer Fabrication Method: PRESSED; Style Designator: SEPARABLE INNER RACE, WITH ROLLER RETAINER, HARDENED AND GROUND; Standard Tolerance Designation: AFBMA STD TOLERANCE FOR INDUSTRIAL NEEDLE BEARINGS; Alignment Type: RIGID. 13 total characteristics are documented in the Federal Logistics Information System.

Is NSN 3110-00-227-3202 still in active supply?

NSN 3110-00-227-3202 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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