PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

112-33Piston,internal Combustion Engin

Cummins Power Generation Inc. · NSN 2805-00-517-9519 · FSC 2805 · No Item Name Available
Verified by PartsTable
NSN 2805-00-517-9519 — this item is cataloged by the U.S. Government under National Stock Number 2805-00-517-9519. Primary manufacturer part number: 112-33.
Features
  • Piston,internal Combustion Engin — FSC 2805
  • Material: ALUMINUM
  • Head Style: FLAT
  • Surface Finish: FINISHED
  • Ring Groove Width: 0.1880 INCHES MINIMUM AND 0.1890 INCHES MAXIMUM THIRD RING IN
  • Retaining Ring Groove: INCLUDED
  • FSC Application Data: ENGINE,GASOLINE,RECIPROCATING NONAIRCRAFT
  • Distance From Pin Hole Center to Extreme Top: 1.495 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN
Applications
  • Applications requiring Aluminum construction
General Description

The Piston,internal Combustion Engin, cataloged under National Stock Number 2805-00-517-9519, is classified within Federal Supply Class 2805 (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 29 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN2805-00-517-9519
Primary Part Number112-33
Item NamePiston,internal Combustion Engin
FSC / FSG2805 / 28 — No Item Name Available
ManufacturerCummins Power Generation Inc.
StatusCANCELLED
MaterialALUMINUM
Head StyleFLAT
Surface FinishFINISHED
Ring Groove Width0.1880 INCHES MINIMUM AND 0.1890 INCHES MAXIMUM THIRD RING IN
Retaining Ring GrooveINCLUDED
FSC Application DataENGINE,GASOLINE,RECIPROCATING NONAIRCRAFT
Distance From Pin Hole Center to Extreme Top1.495 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN
PinINCLUDED
Pin Hole BushingNOT INCLUDED
RingNOT INCLUDED
Skirt Slot StyleBASE TO GROOVE SLOT
Pin Type for Which DesignedFLOATING
Ring Groove Width0.0950 INCHES MINIMUM AND 0.0960 INCHES MAXIMUM SECOND RING IN
Ring Groove Diameter2.644 INCHES MAXIMUM SIXTH RING IN
Ring Groove Diameter2.684 INCHES MAXIMUM FOURTH RING IN
Oil GrooveNOT INCLUDED
Pinhole Diameter0.7500 INCHES NOMINAL IN
Finished Size DesignationSTANDARD
Ring Groove Quantity3
Cut Depth0.438 INCHES NOMINAL IN
Diameter3.000 INCHES NOMINAL IN
Skirt Bottom Cutaway FeatureINCLUDED
Ring Groove Width0.0955 INCHES MINIMUM AND 0.0965 INCHES MAXIMUM FIRST RING IN
Skirt TypeFULL SPLIT
Ring Groove Diameter2.674 INCHES MINIMUM THIRD RING IN
Distance Between Pin Bosses1.312 INCHES NOMINAL IN
Carbon GrooveNOT INCLUDED
Ring Groove Diameter2.634 INCHES MINIMUM FIFTH RING IN
Ring Groove Diameter2.684 INCHES MAXIMUM SECOND RING IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 10
3020-00-070-1432 INTERCHANGEABLE
Gear,spur
5310-00-292-3442 INTERCHANGEABLE
Washer,flat
5975-00-513-2417S1110751-6 INTERCHANGEABLE
Ferrule,electrical Conduit
The Boeing Company
5136-00-580-717054765 INTERCHANGEABLE
Tap,thread Cutting
Tapco Cutting Tools Inc
4820-00-586-8448 INTERCHANGEABLE
Valve,check
2915-00-728-230411233 INTERCHANGEABLE
Seal,rotary,pump
Parker Hannifin Corp Dba Pneutronics
5815-00-980-7563112-33 INTERCHANGEABLE
Spindle
Motorola Solutions Danmark A/s
5315-01-202-2869 INTERCHANGEABLE
Pin,straight,headed
5133-01-210-344631798 INTERCHANGEABLE
Drill,twist
New York Twist Drill Inc
5340-01-218-8475L-921-3 INTERCHANGEABLE
Caster,swivel
Fki Industries Inc Dba Faultless Caster Division
Cross-Reference Index
Part NumberManufacturer
112B6 Cummins Power Generation Inc. (USA)
112-33 PRIMARY Cummins Power Generation Inc. (USA)
Related Parts
3020-00-070-1432INTERCHANGEABLE
GEAR,SPUR
5310-00-292-3442INTERCHANGEABLE
WASHER,FLAT
5975-00-513-2417INTERCHANGEABLE
FERRULE,ELECTRICAL CONDUIT
S1110751-6
5136-00-580-7170INTERCHANGEABLE
TAP,THREAD CUTTING
54765
4820-00-586-8448INTERCHANGEABLE
VALVE,CHECK
2915-00-728-2304INTERCHANGEABLE
SEAL,ROTARY,PUMP
11233
5815-00-980-7563INTERCHANGEABLE
SPINDLE
112-33
5315-01-202-2869INTERCHANGEABLE
PIN,STRAIGHT,HEADED
5133-01-210-3446INTERCHANGEABLE
DRILL,TWIST
31798
5340-01-218-8475INTERCHANGEABLE
CASTER,SWIVEL
L-921-3

Frequently Asked Questions

What is NSN 2805-00-517-9519?

NSN 2805-00-517-9519 is a Piston,internal Combustion Engin, manufactured by Cummins Power Generation Inc., classified under FSC 2805 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 2805-00-517-9519?

NSN 2805-00-517-9519 has 2 cross-referenced part numbers: 112B6 (Cummins Power Generation Inc.), 112-33 (Cummins Power Generation Inc.).

What NSN replaces 2805-00-517-9519?

There are 10 known substitutes for 2805-00-517-9519: 3020-00-070-1432, 5310-00-292-3442, 5975-00-513-2417 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 112-33?

Key specifications for 112-33: Material: ALUMINUM; Head Style: FLAT; Surface Finish: FINISHED; Ring Groove Width: 0.1880 INCHES MINIMUM AND 0.1890 INCHES MAXIMUM THIRD RING IN. 30 total characteristics are documented in the Federal Logistics Information System.

Is NSN 2805-00-517-9519 still in active supply?

NSN 2805-00-517-9519 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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