PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

056-2Bearing,ball,annular

Lockheed Martin Corporation Div Rms - Mitchel Field · NSN 3110-00-155-9573 · FSC 3110 · No Item Name Available
Verified by PartsTable
NSN 3110-00-155-9573 — this item is cataloged by the U.S. Government under National Stock Number 3110-00-155-9573. Primary manufacturer part number: 056-2.
Features
  • Bearing,ball,annular — FSC 3110
  • Surface Finish: GROUND
  • Standard Tolerance Designation: ABEC NO.1
  • Bore Shape: STRAIGHT
  • Lubrication Material: GREASE
  • Load Direction: RADIAL
  • Internal Fit-Up Designation: STANDARD
  • Lubrication Material Document and Classification: MIL-G-18709 MIL SPEC SINGLE MATERIAL RESPONSE
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Steel Overall construction
General Description

The Bearing,ball,annular, cataloged under National Stock Number 3110-00-155-9573, is classified within Federal Supply Class 3110 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Lockheed Martin Corporation Div Rms - Mitchel Field. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 40 commercial cross-references from 14 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
NSN3110-00-155-9573
Primary Part Number056-2
Item NameBearing,ball,annular
FSC / FSG3110 / 31 — No Item Name Available
ManufacturerLockheed Martin Corporation Div Rms - Mitchel Field
StatusACTIVE
Surface FinishGROUND
Standard Tolerance DesignationABEC NO.1
Bore ShapeSTRAIGHT
Lubrication MaterialGREASE
Load DirectionRADIAL
Internal Fit-Up DesignationSTANDARD
Lubrication Material Document and ClassificationMIL-G-18709 MIL SPEC SINGLE MATERIAL RESPONSE
MaterialSTEEL OVERALL
Style DesignatorNON-LOADING GROOVE, NON-SEPARABLE
Overall Outside Diameter0.5000 INCHES NOMINAL IN
Bore Diameter0.1250 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4310-00-006-9542B9 INTERCHANGEABLE
Crankcase,compresso
Gardner Denver Inc.
1020-00-021-29172873025 INTERCHANGEABLE
Control,upper Hoist
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
3110-00-100-314814136A INTERCHANGEABLE
Cone and Rollers,tapered Roller
Rbc Bearings Incorporated Div West Trenton Division
3020-00-107-1530700012 INTERCHANGEABLE
Gear,helical
Dresser, Llc
5905-00-107-9038475-6202-657178PC6 INTERCHANGEABLE
Resistor,adjustable
Naval Ship Systems Command
5905-00-111-4743 INTERCHANGEABLE
Resistor,fixed,composition
3110-00-155-624010702 INTERCHANGEABLE
Bearing,ball,annular
Hyster-Yale Group, Inc.
3110-00-155-9149 INTERCHANGEABLE
Bearing,ball,thrust
5930-00-296-6422697603 PIECE 6 INTERCHANGEABLE
Switch,push
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5999-00-409-9274B9 INTERCHANGEABLE
Heater,thermal Release
Ward Leonard Ct Llc
Cross-Reference Index
Part NumberManufacturer
R2AX1A General Motors Llc Dba General Motors Llc (USA)
R2A General Motors Llc Dba General Motors Llc (USA)
R2AX1LT General Motors Llc Dba General Motors Llc (USA)
056-2 PRIMARY Lockheed Martin Corporation Div Rms - Mitchel Field (USA)
S0SQ5A7PSSEPS PRIMARY Skf Usa Inc. (USA)
33-4 PRIMARY Timken Co Div the Timken Company (USA)
B9 PRIMARY Raytheon Company (USA)
273829-9 PRIMARY Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
R2AX1228 General Motors Corp (USA)
5990766P31 PRIMARY General Electric Company (USA)
281479-1 PRIMARY Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
S0RTF PRIMARY Fag Bearings Corporation (USA)
R2AX1A General Motors Corp Delco Moraine Ndh Div (USA)
R2AX1U General Motors Llc Dba General Motors Llc (USA)
177039-106 PRIMARY Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
319687-362 PRIMARY Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
R2AX1228 General Motors Corp Delco Moraine Ndh Div (USA)
R2AX1A General Motors Corp (USA)
102668-30 PRIMARY Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
S0RINST0IL PRIMARY Fag Bearings Corporation (USA)
Related Parts
4310-00-006-9542INTERCHANGEABLE
CRANKCASE,COMPRESSO
B9
1020-00-021-2917INTERCHANGEABLE
CONTROL,UPPER HOIST
2873025
3110-00-100-3148INTERCHANGEABLE
CONE AND ROLLERS,TAPERED ROLLER
14136A
3020-00-107-1530INTERCHANGEABLE
GEAR,HELICAL
700012
5905-00-107-9038INTERCHANGEABLE
RESISTOR,ADJUSTABLE
475-6202-657178PC6
5905-00-111-4743INTERCHANGEABLE
RESISTOR,FIXED,COMPOSITION
3110-00-155-6240INTERCHANGEABLE
BEARING,BALL,ANNULAR
10702
3110-00-155-9149INTERCHANGEABLE
BEARING,BALL,THRUST
5930-00-296-6422INTERCHANGEABLE
SWITCH,PUSH
697603 PIECE 6
5999-00-409-9274INTERCHANGEABLE
HEATER,THERMAL RELEASE
B9
5355-00-433-4075INTERCHANGEABLE
KNOB
B-9
5998-00-468-4979INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
700012

Frequently Asked Questions

What is NSN 3110-00-155-9573?

NSN 3110-00-155-9573 is a Bearing,ball,annular, manufactured by Lockheed Martin Corporation Div Rms - Mitchel Field, classified under FSC 3110 (No Item Name Available). Status: active.

What are the part numbers for NSN 3110-00-155-9573?

NSN 3110-00-155-9573 has 40 cross-referenced part numbers: R2AX1A (General Motors Llc Dba General Motors Llc), R2A (General Motors Llc Dba General Motors Llc), R2AX1LT (General Motors Llc Dba General Motors Llc), 056-2 (Lockheed Martin Corporation Div Rms - Mitchel Field), S0SQ5A7PSSEPS (Skf Usa Inc.) and 35 more.

What NSN replaces 3110-00-155-9573?

There are 12 known substitutes for 3110-00-155-9573: 4310-00-006-9542, 1020-00-021-2917, 3110-00-100-3148 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 056-2?

Key specifications for 056-2: Surface Finish: GROUND; Standard Tolerance Designation: ABEC NO.1; Bore Shape: STRAIGHT; Lubrication Material: GREASE. 12 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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