PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

81641Bearing Unit,plain

Tulsa Winch, Inc. · NSN 3130-01-613-6177 · FSC 3130 · No Item Name Available
Verified by PartsTable
NSN 3130-01-613-6177 — this item is cataloged by the U.S. Government under National Stock Number 3130-01-613-6177. Primary manufacturer part number: 81641.
Features
  • Bearing Unit,plain — FSC 3130
  • Bore Diameter: 0.750 INCHES NOMINAL IN
  • 3 verified cross-references
  • Primary manufacturer: Tulsa Winch, Inc.
Applications
  • Rotating machinery support and alignment
  • Shaft load distribution
  • Precision spindle assemblies
General Description

The Bearing Unit,plain, cataloged under National Stock Number 3130-01-613-6177, is classified within Federal Supply Class 3130 (No Item Name Available) of the Bearings group. The primary manufacturer of record is Tulsa Winch, Inc.. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3130-01-613-6177
Primary Part Number81641
Item NameBearing Unit,plain
FSC / FSG3130 / 31 — No Item Name Available
ManufacturerTulsa Winch, Inc.
StatusACTIVE
Bore Diameter0.750 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5330-00-129-945381641 INTERCHANGEABLE
Seal,piston Relay Valve
Westinghouse Air Brake Technologies Corp Dba Westinghouse Air Brake Technologies Corp
5315-01-422-5819 INTERCHANGEABLE
Pin,straight,headless
6145-01-469-999383004 INTERCHANGEABLE
Wire,electrical
General Cable Corporation Div Corporate
5340-01-678-704581641 INTERCHANGEABLE
Hardware Kit,mechanic Equipment
Aerovironment, Inc. Dba Aerovironment Inc
Cross-Reference Index
Part NumberManufacturer
81641 PRIMARY Tulsa Winch, Inc. (USA)
81641 DP Manufacturing Inc. (USA)
Y00025017 Soframe (FRA)
Related Parts
5330-00-129-9453INTERCHANGEABLE
SEAL,PISTON RELAY VALVE
81641
5315-01-422-5819INTERCHANGEABLE
PIN,STRAIGHT,HEADLESS
6145-01-469-9993INTERCHANGEABLE
WIRE,ELECTRICAL
83004
5340-01-678-7045INTERCHANGEABLE
HARDWARE KIT,MECHANIC EQUIPMENT
81641

Frequently Asked Questions

What is NSN 3130-01-613-6177?

NSN 3130-01-613-6177 is a Bearing Unit,plain, manufactured by Tulsa Winch, Inc., classified under FSC 3130 (No Item Name Available). Status: active.

What are the part numbers for NSN 3130-01-613-6177?

NSN 3130-01-613-6177 has 3 cross-referenced part numbers: 81641 (Tulsa Winch, Inc.), 81641 (DP Manufacturing Inc.), Y00025017 (Soframe).

What NSN replaces 3130-01-613-6177?

There are 4 known substitutes for 3130-01-613-6177: 5330-00-129-9453, 5315-01-422-5819, 6145-01-469-9993 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 81641?

Key specifications for 81641: Bore Diameter: 0.750 INCHES NOMINAL IN; Part Name Assigned by Controlling Agency: BEARING 3/4ID; End Item Identification: NSN 2320-01-543-0651. 3 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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