PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

126111Piston,internal Combustion Engin

Brinkley Technology Group Llc Dba Hercules Manufacturing · NSN 2815-00-554-6391 · FSC 2815 · No Item Name Available
Verified by PartsTable
NSN 2815-00-554-6391 — this item is cataloged by the U.S. Government under National Stock Number 2815-00-554-6391. Primary manufacturer part number: 126111.
Features
  • Piston,internal Combustion Engin — FSC 2815
  • Distance From Pin Hole Center to Extreme Top: 2.531 INCHES MINIMUM AND 2.533 INCHES MAXIMUM IN
  • Surface Treatment: TIN
  • Ring Groove Width: 0.1270 INCHES MINIMUM AND 0.1280 INCHES MAXIMUM SECOND RING IN
  • Skirt Bottom Cutaway Feature: NOT INCLUDED
  • Oil Passage Type: HOLE LOCATION NOT OTHERWISE SPECIFIED
  • Ring Groove Diameter: 3.213 INCHES MINIMUM THIRD RING IN
  • Pin Type for Which Designed: FLOATING
Applications
  • Applications requiring Aluminum construction
General Description

The Piston,internal Combustion Engin, cataloged under National Stock Number 2815-00-554-6391, is classified within Federal Supply Class 2815 (No Item Name Available) of the Engines, Turbines, and Components group. The primary manufacturer of record is Brinkley Technology Group Llc Dba Hercules Manufacturing. Government technical data includes 29 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. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN2815-00-554-6391
Primary Part Number126111
Item NamePiston,internal Combustion Engin
FSC / FSG2815 / 28 — No Item Name Available
ManufacturerBrinkley Technology Group Llc Dba Hercules Manufacturing
StatusACTIVE
Distance From Pin Hole Center to Extreme Top2.531 INCHES MINIMUM AND 2.533 INCHES MAXIMUM IN
Surface TreatmentTIN
Ring Groove Width0.1270 INCHES MINIMUM AND 0.1280 INCHES MAXIMUM SECOND RING IN
Skirt Bottom Cutaway FeatureNOT INCLUDED
Oil Passage TypeHOLE LOCATION NOT OTHERWISE SPECIFIED
Ring Groove Diameter3.213 INCHES MINIMUM THIRD RING IN
Pin Type for Which DesignedFLOATING
FSC Application DataENGINE,DIESEL
Ring Groove Diameter3.221 INCHES MAXIMUM SECOND RING IN
Ring Groove Diameter3.223 INCHES MAXIMUM SIXTH RING IN
Unable to DecodeUNABLE TO DECODE
Carbon GrooveNOT INCLUDED
Finished Size DesignationSTANDARD
Ring Groove Quantity5
Groove Taper Angle15 DEGREE INCLUDE ANGLE
PinINCLUDED
Ring Groove Diameter3.213 INCHES MINIMUM SEVENTH RING IN
Ring Groove Diameter3.213 INCHES MINIMUM FIFTH RING IN
Ring Groove Width0.1250 INCHES NOMINAL FIRST RING IN
Ring Groove Diameter3.263 INCHES MAXIMUM FOURTH RING IN
Ring Groove Diameter3.223 INCHES MAXIMUM EIGHTH RING IN
MaterialALUMINUM
Head StyleFLAT
Ring Groove Position and QuantityNUMBER 1,NUMBER 2,NUMBER 3,NUMBER 4,AND NUMBER 5 PISTON ALL RINGS
Retaining Ring GrooveINCLUDED
RingNOT INCLUDED
Distance Between Pin Bosses1.250 INCHES NOMINAL IN
Pinhole Diameter1.1240 INCHES MINIMUM AND 1.1250 INCHES MAXIMUM IN
Pin Hole BushingNOT INCLUDED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5136-00-228-1055 INTERCHANGEABLE
Tap,thread Cutting
6515-00-469-6570 INTERCHANGEABLE
Nebulizer,inhalation Therapy App
4730-00-802-589801261-0020 INTERCHANGEABLE
Coupling Half,quick Disconnect
Parker-Hannifin Corporation Div Quick Coupling Division
5895-01-224-6591126111-1 INTERCHANGEABLE
Detector,radio Frequency
Continental Electronics Corp
Cross-Reference Index
Part NumberManufacturer
126111 Hercules Engine Co Inc (USA)
126111 PRIMARY Brinkley Technology Group Llc Dba Hercules Manufacturing (USA)
Related Parts
5136-00-228-1055INTERCHANGEABLE
TAP,THREAD CUTTING
6515-00-469-6570INTERCHANGEABLE
NEBULIZER,INHALATION THERAPY APP
4730-00-802-5898INTERCHANGEABLE
COUPLING HALF,QUICK DISCONNECT
01261-0020
5895-01-224-6591INTERCHANGEABLE
DETECTOR,RADIO FREQUENCY
126111-1

Frequently Asked Questions

What is NSN 2815-00-554-6391?

NSN 2815-00-554-6391 is a Piston,internal Combustion Engin, manufactured by Brinkley Technology Group Llc Dba Hercules Manufacturing, classified under FSC 2815 (No Item Name Available). Status: active.

What are the part numbers for NSN 2815-00-554-6391?

NSN 2815-00-554-6391 has 2 cross-referenced part numbers: 126111 (Hercules Engine Co Inc), 126111 (Brinkley Technology Group Llc Dba Hercules Manufacturing).

What NSN replaces 2815-00-554-6391?

There are 4 known substitutes for 2815-00-554-6391: 5136-00-228-1055, 6515-00-469-6570, 4730-00-802-5898 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 126111?

Key specifications for 126111: Distance From Pin Hole Center to Extreme Top: 2.531 INCHES MINIMUM AND 2.533 INCHES MAXIMUM IN; Surface Treatment: TIN; Ring Groove Width: 0.1270 INCHES MINIMUM AND 0.1280 INCHES MAXIMUM SECOND RING IN; Weight: 27.0 OUNCES OZ. 30 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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