PartsTable TECHNICAL DATA SHEET
AUGUST 2026Technical Data Sheet

2051G81-001Spacer,sleeve

Timken Gears & Services Inc. Div Philadelphia Gear · NSN 5365-01-266-2598 · FSC 5365 · No Item Name Available
Verified by PartsTable
NSN 5365-01-266-2598 — this item is cataloged by the U.S. Government under National Stock Number 5365-01-266-2598. Primary manufacturer part number: 2051G81-001.
Features
  • Spacer,sleeve — FSC 5365
  • Right Flange Outside Diameter: 3.2480 INCHES MINIMUM AND 3.2490 INCHES MAXIMUM IN
  • Right Flange Width: 0.2400 INCHES NOMINAL IN
  • Body Outside Diameter: 3.1200 INCHES NOMINAL IN
  • Left Flange Width: 0.5000 INCHES NOMINAL IN
  • Body Inside Diameter: 2.7600 INCHES NOMINAL IN
  • Left Flange Outside Diameter: 3.2480 INCHES MINIMUM AND 3.2490 INCHES MAXIMUM IN
  • Corner Shape: ROUND LEFT FLANGE BODY CORNER
Applications
  • Applications requiring Steel Overall construction
General Description

The Spacer,sleeve, cataloged under National Stock Number 5365-01-266-2598, is classified within Federal Supply Class 5365 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Timken Gears & Services Inc. Div Philadelphia Gear. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5365-01-266-2598
Primary Part Number2051G81-001
Item NameSpacer,sleeve
FSC / FSG5365 / 53 — No Item Name Available
ManufacturerTimken Gears & Services Inc. Div Philadelphia Gear
StatusACTIVE
Right Flange Outside Diameter3.2480 INCHES MINIMUM AND 3.2490 INCHES MAXIMUM IN
Right Flange Width0.2400 INCHES NOMINAL IN
Body Outside Diameter3.1200 INCHES NOMINAL IN
Left Flange Width0.5000 INCHES NOMINAL IN
Body Inside Diameter2.7600 INCHES NOMINAL IN
Left Flange Outside Diameter3.2480 INCHES MINIMUM AND 3.2490 INCHES MAXIMUM IN
Corner ShapeROUND LEFT FLANGE BODY CORNER
Corner ShapeSQUARE RIGHT FLANGE OUTSIDE LEFT CORNER
Corner ShapeCHAMFERED OUTSIDE RIGHT CORNER
Corner ShapeSQUARE OUTSIDE LEFT CORNER
Corner ShapeSQUARE LEFT FLANGE OUTSIDE RIGHT CORNER
Corner ShapeSQUARE INSIDE RIGHT CORNER
Style DesignatorSOLID, EXTERNAL FLANGES BOTH ENDS
Corner ShapeSQUARE INSIDE LEFT CORNER
Material Document and ClassificationB4A39P SCH160,CAGEC 01289 MFR REF SINGLE MATERIAL RESPONSE OVERALL
Corner ShapeROUND RIGHT FLANGE BODY CORNER
MaterialSTEEL OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Cross-Reference Index
Part NumberManufacturer
2051G81-001 PRIMARY Timken Gears & Services Inc. Div Philadelphia Gear (USA)
2051G81-001 General Electric Company (USA)
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Frequently Asked Questions

What is NSN 5365-01-266-2598?

NSN 5365-01-266-2598 is a Spacer,sleeve, manufactured by Timken Gears & Services Inc. Div Philadelphia Gear, classified under FSC 5365 (No Item Name Available). Status: active.

What are the part numbers for NSN 5365-01-266-2598?

NSN 5365-01-266-2598 has 2 cross-referenced part numbers: 2051G81-001 (Timken Gears & Services Inc. Div Philadelphia Gear), 2051G81-001 (General Electric Company).

What are the specifications of 2051G81-001?

Key specifications for 2051G81-001: Right Flange Outside Diameter: 3.2480 INCHES MINIMUM AND 3.2490 INCHES MAXIMUM IN; Right Flange Width: 0.2400 INCHES NOMINAL IN; Body Outside Diameter: 3.1200 INCHES NOMINAL IN; Overall Length: 1.6200 INCHES NOMINAL IN. 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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