PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

112-0173Piston,internal Combustion Engin

Cummins Power Generation Inc. · NSN 2815-00-950-8404 · FSC 2815 · No Item Name Available
Verified by PartsTable
NSN 2815-00-950-8404 — this item is cataloged by the U.S. Government under National Stock Number 2815-00-950-8404. Primary manufacturer part number: 112-0173.
Features
  • Piston,internal Combustion Engin — FSC 2815
  • Ring Groove Width: 0.0940 INCHES NOMINAL SECOND RING IN
  • Diameter: 3.245 INCHES NOMINAL IN
  • Ring Groove Width: 0.0940 INCHES NOMINAL THIRD RING IN
  • Ring Groove Diameter: 2.875 INCHES NOMINAL SECOND RING IN
  • Pinhole Diameter: 1.0000 INCHES NOMINAL IN
  • Finished Size Designation: STANDARD
  • Skirt Type: SOLID
Applications
  • Applications requiring Aluminum Alloy construction
General Description

The Piston,internal Combustion Engin, cataloged under National Stock Number 2815-00-950-8404, is classified within Federal Supply Class 2815 (No Item Name Available) of the Engines, Turbines, and Components group. The primary manufacturer of record is Cummins Power Generation Inc.. Government technical data includes 28 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN2815-00-950-8404
Primary Part Number112-0173
Item NamePiston,internal Combustion Engin
FSC / FSG2815 / 28 — No Item Name Available
ManufacturerCummins Power Generation Inc.
StatusCANCELLED
Ring Groove Width0.0940 INCHES NOMINAL SECOND RING IN
Diameter3.245 INCHES NOMINAL IN
Ring Groove Width0.0940 INCHES NOMINAL THIRD RING IN
Ring Groove Diameter2.875 INCHES NOMINAL SECOND RING IN
Pinhole Diameter1.0000 INCHES NOMINAL IN
Finished Size DesignationSTANDARD
Skirt TypeSOLID
MaterialALUMINUM ALLOY
Carbon GrooveNOT INCLUDED
Pin Hole BushingNOT INCLUDED
Cut Depth1.062 INCHES NOMINAL IN
Distance Between Pin Bosses1.500 INCHES NOMINAL IN
Ring Groove Diameter2.875 INCHES NOMINAL THIRD RING IN
Pin Type for Which DesignedFLOATING
Ring Groove Diameter2.875 INCHES NOMINAL FOURTH RING IN
Ring Groove Width0.1875 INCHES NOMINAL FOURTH RING IN
Ring Groove Quantity4
Retaining Ring GrooveINCLUDED
Oil Passage TypeHOLE LOCATION NOT OTHERWISE SPECIFIED
Distance From Pin Hole Center to Extreme Top2.000 INCHES NOMINAL IN
Oil GrooveNOT INCLUDED
RingINCLUDED
Ring Groove Width0.0940 INCHES NOMINAL FIRST RING IN
Skirt Bottom Cutaway FeatureINCLUDED
PinINCLUDED
Surface FinishFINISHED
Ring Groove Diameter2.875 INCHES NOMINAL FIRST RING IN
Head StyleFLAT
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 6
4820-01-312-50291120-103 INTERCHANGEABLE
Valve,check
R & D Machine Rafael Anaya Div Defense Logistics Agency
4730-01-325-75158772812-3 INTERCHANGEABLE
Tee,tube
Libby Power Systems, Llc
5998-01-373-8327 INTERCHANGEABLE
Circuit Card Assembly
3020-01-415-8281112103 INTERCHANGEABLE
Gear,spur
Triumph Engine Control Systems Llc
2040-01-531-7329112103 INTERCHANGEABLE
Cover,boat
Shield Technologies Corp Div Shield Technologies Corporation
5998-01-570-57181120103 INTERCHANGEABLE
Circuit Card Assembly
Dataprobe Inc
Cross-Reference Index
Part NumberManufacturer
112-0173 PRIMARY Cummins Power Generation Inc. (USA)
112-103STD Cummins Power Generation Inc. (USA)
112-103 Cummins Power Generation Inc. (USA)
112-0103 Cummins Power Generation Inc. (USA)
Related Parts
4820-01-312-5029INTERCHANGEABLE
VALVE,CHECK
1120-103
4730-01-325-7515INTERCHANGEABLE
TEE,TUBE
8772812-3
5998-01-373-8327INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
3020-01-415-8281INTERCHANGEABLE
GEAR,SPUR
112103
2040-01-531-7329INTERCHANGEABLE
COVER,BOAT
112103
5998-01-570-5718INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
1120103

Frequently Asked Questions

What is NSN 2815-00-950-8404?

NSN 2815-00-950-8404 is a Piston,internal Combustion Engin, manufactured by Cummins Power Generation Inc., classified under FSC 2815 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 2815-00-950-8404?

NSN 2815-00-950-8404 has 4 cross-referenced part numbers: 112-0173 (Cummins Power Generation Inc.), 112-103STD (Cummins Power Generation Inc.), 112-103 (Cummins Power Generation Inc.), 112-0103 (Cummins Power Generation Inc.).

What NSN replaces 2815-00-950-8404?

There are 6 known substitutes for 2815-00-950-8404: 4820-01-312-5029, 4730-01-325-7515, 5998-01-373-8327 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 112-0173?

Key specifications for 112-0173: Ring Groove Width: 0.0940 INCHES NOMINAL SECOND RING IN; Diameter: 3.245 INCHES NOMINAL IN; Ring Groove Width: 0.0940 INCHES NOMINAL THIRD RING IN; Ring Groove Diameter: 2.875 INCHES NOMINAL SECOND RING IN. 30 total characteristics are documented in the Federal Logistics Information System.

Is NSN 2815-00-950-8404 still in active supply?

NSN 2815-00-950-8404 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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