PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

61263Ring,piston

Cummins Inc. · NSN 2815-00-273-0598 · FSC 2815 · No Item Name Available
Verified by PartsTable
NSN 2815-00-273-0598 — this item is cataloged by the U.S. Government under National Stock Number 2815-00-273-0598. Primary manufacturer part number: 61263.
Features
  • Ring,piston — FSC 2815
  • Joint Style: VERTICAL JOINT
  • Standard Bore Diameter: 4.875 INCHES IN
  • FSC Application Data: ENGINE DIESEL
  • Cross-Sectional Shape Style: STRAIGHT FACE, BOTTOM RELIEF
  • Ring Style: CONCENTRIC
  • Material: IRON OVERALL
  • Radial Wall Thickness: 0.1800 INCHES MINIMUM AND 0.1900 INCHES MAXIMUM IN
Applications
  • Applications requiring Iron Overall construction
General Description

The Ring,piston, cataloged under National Stock Number 2815-00-273-0598, 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 Inc.. Government technical data includes 7 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. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN2815-00-273-0598
Primary Part Number61263
Item NameRing,piston
FSC / FSG2815 / 28 — No Item Name Available
ManufacturerCummins Inc.
StatusCANCELLED
Joint StyleVERTICAL JOINT
Standard Bore Diameter4.875 INCHES IN
FSC Application DataENGINE DIESEL
Cross-Sectional Shape StyleSTRAIGHT FACE, BOTTOM RELIEF
Ring StyleCONCENTRIC
MaterialIRON OVERALL
Radial Wall Thickness0.1800 INCHES MINIMUM AND 0.1900 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 4
2910-00-695-7591 INTERCHANGEABLE
Spring,helical Comp
4610-00-780-096561263P007 INTERCHANGEABLE
Plunger,pump
Natural Gas Solutions North America Llc Div Industrial Products Group
4720-01-230-909821027 INTERCHANGEABLE
Hose,preformed
Gates Corporation
5330-01-447-289761263 INTERCHANGEABLE
Parts Kit,seal Replacement,mecha
Eaton Corporation Div Eaton Fluid Power
Cross-Reference Index
Part NumberManufacturer
61263 PRIMARY Cummins Inc. (USA)
H61263 Cummins Inc. (USA)
Related Parts
2910-00-695-7591INTERCHANGEABLE
SPRING,HELICAL COMP
4610-00-780-0965INTERCHANGEABLE
PLUNGER,PUMP
61263P007
4720-01-230-9098INTERCHANGEABLE
HOSE,PREFORMED
21027
5330-01-447-2897INTERCHANGEABLE
PARTS KIT,SEAL REPLACEMENT,MECHA
61263

Frequently Asked Questions

What is NSN 2815-00-273-0598?

NSN 2815-00-273-0598 is a Ring,piston, manufactured by Cummins Inc., classified under FSC 2815 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 2815-00-273-0598?

NSN 2815-00-273-0598 has 2 cross-referenced part numbers: 61263 (Cummins Inc.), H61263 (Cummins Inc.).

What NSN replaces 2815-00-273-0598?

There are 4 known substitutes for 2815-00-273-0598: 2910-00-695-7591, 4610-00-780-0965, 4720-01-230-9098 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 61263?

Key specifications for 61263: Joint Style: VERTICAL JOINT; Standard Bore Diameter: 4.875 INCHES IN; FSC Application Data: ENGINE DIESEL; Overall Width: 0.1230 INCHES MINIMUM AND 0.1240 INCHES MAXIMUM IN. 8 total characteristics are documented in the Federal Logistics Information System.

Is NSN 2815-00-273-0598 still in active supply?

NSN 2815-00-273-0598 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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