PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

9M171-3ABearing,ball,airframe

Aviation Manufacturing Group, Llc Dba the Freeman Company · NSN 3110-00-142-0952 · FSC 3110 · No Item Name Available
Verified by PartsTable
NSN 3110-00-142-0952 — this item is cataloged by the U.S. Government under National Stock Number 3110-00-142-0952. Primary manufacturer part number: 9M171-3A.
Features
  • Bearing,ball,airframe — FSC 3110
  • Seal Quantity: 2
  • Inner Ring Width: 0.5580 INCHES NOMINAL IN
  • Standard Tolerance Designation: AFBMA STD TOLERANCE FOR AIRFRAME BALL BEARINGS
  • Self-Alignment Location: INTERNAL
  • Outer Ring Width: 0.3750 INCHES NOMINAL IN
  • Load Direction: RADIAL
  • Bearing Seal Type: CONTACT
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Steel Inner Ring construction
General Description

The Bearing,ball,airframe, cataloged under National Stock Number 3110-00-142-0952, is classified within Federal Supply Class 3110 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Aviation Manufacturing Group, Llc Dba the Freeman Company. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 10 commercial cross-references from 5 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
NSN3110-00-142-0952
Primary Part Number9M171-3A
Item NameBearing,ball,airframe
FSC / FSG3110 / 31 — No Item Name Available
ManufacturerAviation Manufacturing Group, Llc Dba the Freeman Company
StatusACTIVE
Seal Quantity2
Inner Ring Width0.5580 INCHES NOMINAL IN
Standard Tolerance DesignationAFBMA STD TOLERANCE FOR AIRFRAME BALL BEARINGS
Self-Alignment LocationINTERNAL
Outer Ring Width0.3750 INCHES NOMINAL IN
Load DirectionRADIAL
Bearing Seal TypeCONTACT
Alignment TypeSELF-ALIGNING
Lubrication Material Document and ClassificationMIL-G-81322 ASSN STD SINGLE MATERIAL RESPONSE
MaterialSTEEL INNER RING
MaterialSTEEL BALL
MaterialPLASTIC POLYTETRAFLUOROETHYLENE SEAL
MaterialSTEEL OUTER RING
Style DesignatorSINGLE ROW SELF ALIGNING SINGLE ROW INNER RING EXTENDED BOTH SIDES
Surface TreatmentZINC AND NICKEL OR CADMIUM AND CHROMATE ALL EXTERNAL/EXPOSED METAL SURFACES
Overall Outside Diameter1.2500 INCHES NOMINAL IN
Bore Diameter0.3125 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5961-00-104-8428 INTERCHANGEABLE
Transistor
5360-00-316-5328 INTERCHANGEABLE
Spring
4730-00-555-37574LM2 INTERCHANGEABLE
Elbow,pipe to Tube
Circor Instrumentation Technologies, Inc. Dba Hoke Gyrolok
5325-00-639-48994002-2 INTERCHANGEABLE
Stud Assembly,turnlock Fastener
Howmet Global Fastening Systems Inc Div Camloc Products
5999-00-847-0718SM-A-801058-5 INTERCHANGEABLE
Shielding Gasket,electronic
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5945-00-879-8305 INTERCHANGEABLE
Relay,electromagnetic
4210-01-079-9285 INTERCHANGEABLE
Coupling,hose,fire Fighting
5140-01-386-143540022 INTERCHANGEABLE
Chest,intermediate,mobile Tool C
Waterloo Industries Inc
8465-01-541-833140022 INTERCHANGEABLE
Hydration System
Camelbak Products, Llc Dba Camelbak
5305-01-597-287812759-01314 INTERCHANGEABLE
Screw,shoulder
Fastenal Company Dba Fastenal Co
Cross-Reference Index
Part NumberManufacturer
9M171-3A PRIMARY Aviation Manufacturing Group, Llc Dba the Freeman Company (USA)
9M171-3A PRIMARY Hartwell Corporation (USA)
HT670-9 Winchester Machine Co Inc (USA)
9M171-3A Continental Cable, Llc (USA)
97171-3 The Boeing Company Div Defense (USA)
HT670-9 Hartwell Corporation (USA)
4002-2 The Boeing Company Div Defense (USA)
9M171-3 The Boeing Company Div Defense (USA)
9M171-3A The Boeing Company Div Defense (USA)
HT40-3S Hartwell Corporation (USA)
Related Parts
5961-00-104-8428INTERCHANGEABLE
TRANSISTOR
5360-00-316-5328INTERCHANGEABLE
SPRING
4730-00-555-3757INTERCHANGEABLE
ELBOW,PIPE TO TUBE
4LM2
5325-00-639-4899INTERCHANGEABLE
STUD ASSEMBLY,TURNLOCK FASTENER
4002-2
5999-00-847-0718INTERCHANGEABLE
SHIELDING GASKET,ELECTRONIC
SM-A-801058-5
5945-00-879-8305INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
4210-01-079-9285INTERCHANGEABLE
COUPLING,HOSE,FIRE FIGHTING
5140-01-386-1435INTERCHANGEABLE
CHEST,INTERMEDIATE,MOBILE TOOL C
40022
8465-01-541-8331INTERCHANGEABLE
HYDRATION SYSTEM
40022
5305-01-597-2878INTERCHANGEABLE
SCREW,SHOULDER
12759-01314
4730-01-659-9354INTERCHANGEABLE
FITTING,LUBRICATION
4-0022
5340-01-666-4475INTERCHANGEABLE
CLAMP,BLOCK
40022

Frequently Asked Questions

What is NSN 3110-00-142-0952?

NSN 3110-00-142-0952 is a Bearing,ball,airframe, manufactured by Aviation Manufacturing Group, Llc Dba the Freeman Company, classified under FSC 3110 (No Item Name Available). Status: active.

What are the part numbers for NSN 3110-00-142-0952?

NSN 3110-00-142-0952 has 10 cross-referenced part numbers: 9M171-3A (Aviation Manufacturing Group, Llc Dba the Freeman Company), 9M171-3A (Hartwell Corporation), HT670-9 (Winchester Machine Co Inc), 9M171-3A (Continental Cable, Llc), 97171-3 (The Boeing Company Div Defense) and 5 more.

What NSN replaces 3110-00-142-0952?

There are 12 known substitutes for 3110-00-142-0952: 5961-00-104-8428, 5360-00-316-5328, 4730-00-555-3757 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 9M171-3A?

Key specifications for 9M171-3A: Seal Quantity: 2; Inner Ring Width: 0.5580 INCHES NOMINAL IN; Standard Tolerance Designation: AFBMA STD TOLERANCE FOR AIRFRAME BALL BEARINGS; Self-Alignment Location: INTERNAL. 18 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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