PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

LST491S2600-270520PC31Bearing,sleeve

Naval Ship Systems Command · NSN 3120-00-343-7786 · FSC 3120 · No Item Name Available
Verified by PartsTable
NSN 3120-00-343-7786 — this item is cataloged by the U.S. Government under National Stock Number 3120-00-343-7786. Primary manufacturer part number: LST491S2600-270520PC31.
Features
  • Bearing,sleeve — FSC 3120
  • Lubricant Accommodation Style: GROOVED OPEN ONE END
  • Body Outside Diameter: 15.2560 INCHES MINIMUM AND 15.2580 INCHES MAXIMUM IN
  • Body Inside Diameter: 14.5240 INCHES MINIMUM AND 14.5260 INCHES MAXIMUM IN
  • Surface Groove Location and Quantity: 4 INTERNAL
  • Style Designator: SOLID, PLAIN, NO OUTSIDE FLANGES
  • Material Document and Classification: MIL-B-16444 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Material: COPPER ALLOY 836 OVERALL
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
  • Applications requiring Copper Alloy 836 Overall construction
General Description

The Bearing,sleeve, cataloged under National Stock Number 3120-00-343-7786, is classified within Federal Supply Class 3120 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Naval Ship Systems Command. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 17 commercial cross-references from 3 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
NSN3120-00-343-7786
Primary Part NumberLST491S2600-270520PC31
Item NameBearing,sleeve
FSC / FSG3120 / 31 — No Item Name Available
ManufacturerNaval Ship Systems Command
StatusACTIVE
Lubricant Accommodation StyleGROOVED OPEN ONE END
Body Outside Diameter15.2560 INCHES MINIMUM AND 15.2580 INCHES MAXIMUM IN
Body Inside Diameter14.5240 INCHES MINIMUM AND 14.5260 INCHES MAXIMUM IN
Surface Groove Location and Quantity4 INTERNAL
Style DesignatorSOLID, PLAIN, NO OUTSIDE FLANGES
Material Document and ClassificationMIL-B-16444 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MaterialCOPPER ALLOY 836 OVERALL
Corner ShapeCHAMFERED ALL CORNERS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5985-00-079-48838037 INTERCHANGEABLE
Dummy Load,electrical
Bird Electronic Corporation Div Bird Electronic Corp
5999-00-089-7995SM-D-921139 INTERCHANGEABLE
Contact Assembly,electrical
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
4510-00-138-2110 INTERCHANGEABLE
Disk Holder,shower
5930-00-195-41608037 INTERCHANGEABLE
Switch,code Indicating Wheel
Electro Switch Corp. Dba Electro Switch Corp Div Digitran a Unit of Electro Switch
3455-00-243-21711-1561-1375 INTERCHANGEABLE
Cutter,milling,woodruff Keyseat
New York Twist Drill Inc
5120-00-357-51805120-00-357-5180 INTERCHANGEABLE
Adapter,mechanical Puller
General Services Administration Federal Supply Service
5950-00-498-5160GE64C INTERCHANGEABLE
Reactor
Espey Mfg. & Electronics Corp.
5965-00-518-0956 INTERCHANGEABLE
Earphone
3110-00-554-53091495-39 INTERCHANGEABLE
Bearing,ball,annular
Sioux Tools Inc
5960-00-814-7845B5031 INTERCHANGEABLE
Electron Tube
Unisys Corporation Dba Unisys Corp
Cross-Reference Index
Part NumberManufacturer
LST491S2600-270520PC31 PRIMARY Naval Ship Systems Command (USA)
AN67S2601-706900PC32 PRIMARY Naval Ship Systems Command (USA)
AN67S2601-706900H69WGW50182 PRIMARY Naval Ship Systems Command (USA)
A8037 Control Flow, Inc. Dba Westech Heavy Machinery Division Div Westech Heavy Machinery Division (USA)
N12262APC32 PRIMARY Control Flow, Inc. Dba Control Flow Inc (USA)
504743PC31 PRIMARY Naval Ship Systems Command (USA)
LST491S2600-2705H69WGW50182 PRIMARY Naval Ship Systems Command (USA)
N12262APC32 Control Flow, Inc. Dba Westech Heavy Machinery Division Div Westech Heavy Machinery Division (USA)
A8037 Control Flow, Inc. Dba Control Flow Inc (USA)
8037 Control Flow, Inc. Dba Westech Heavy Machinery Division Div Westech Heavy Machinery Division (USA)
8037 PRIMARY Control Flow, Inc. Dba Control Flow Inc (USA)
N16268ALTCPC31 Control Flow, Inc. Dba Westech Heavy Machinery Division Div Westech Heavy Machinery Division (USA)
N8350PC31 PRIMARY Control Flow, Inc. Dba Control Flow Inc (USA)
N8350PC31 Control Flow, Inc. Dba Westech Heavy Machinery Division Div Westech Heavy Machinery Division (USA)
31A8037 Control Flow, Inc. Dba Westech Heavy Machinery Division Div Westech Heavy Machinery Division (USA)
N16268ALTCPC31 Control Flow, Inc. Dba Control Flow Inc (USA)
31A8037 Control Flow, Inc. Dba Control Flow Inc (USA)
Related Parts
5985-00-079-4883INTERCHANGEABLE
DUMMY LOAD,ELECTRICAL
8037
5999-00-089-7995INTERCHANGEABLE
CONTACT ASSEMBLY,ELECTRICAL
SM-D-921139
4510-00-138-2110INTERCHANGEABLE
DISK HOLDER,SHOWER
5930-00-195-4160INTERCHANGEABLE
SWITCH,CODE INDICATING WHEEL
8037
3455-00-243-2171INTERCHANGEABLE
CUTTER,MILLING,WOODRUFF KEYSEAT
1-1561-1375
5120-00-357-5180INTERCHANGEABLE
ADAPTER,MECHANICAL PULLER
5120-00-357-5180
5950-00-498-5160INTERCHANGEABLE
REACTOR
GE64C
5965-00-518-0956INTERCHANGEABLE
EARPHONE
3110-00-554-5309INTERCHANGEABLE
BEARING,BALL,ANNULAR
1495-39
5960-00-814-7845INTERCHANGEABLE
ELECTRON TUBE
B5031
5960-00-958-0072INTERCHANGEABLE
ELECTRON TUBE
2805-00-997-9840INTERCHANGEABLE
PISTON,INTERNAL COMBUSTION ENGIN
3831772

Frequently Asked Questions

What is NSN 3120-00-343-7786?

NSN 3120-00-343-7786 is a Bearing,sleeve, manufactured by Naval Ship Systems Command, classified under FSC 3120 (No Item Name Available). Status: active.

What are the part numbers for NSN 3120-00-343-7786?

NSN 3120-00-343-7786 has 17 cross-referenced part numbers: LST491S2600-270520PC31 (Naval Ship Systems Command), AN67S2601-706900PC32 (Naval Ship Systems Command), AN67S2601-706900H69WGW50182 (Naval Ship Systems Command), A8037 (Control Flow, Inc. Dba Westech Heavy Machinery Division Div Westech Heavy Machinery Division), N12262APC32 (Control Flow, Inc. Dba Control Flow Inc) and 12 more.

What NSN replaces 3120-00-343-7786?

There are 12 known substitutes for 3120-00-343-7786: 5985-00-079-4883, 5999-00-089-7995, 4510-00-138-2110 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of LST491S2600-270520PC31?

Key specifications for LST491S2600-270520PC31: Lubricant Accommodation Style: GROOVED OPEN ONE END; Overall Length: 3.5000 INCHES NOMINAL IN; Body Outside Diameter: 15.2560 INCHES MINIMUM AND 15.2580 INCHES MAXIMUM IN; Body Inside Diameter: 14.5240 INCHES MINIMUM AND 14.5260 INCHES MAXIMUM IN. 9 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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