PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

54216BRing,piston

Fairbanks Morse, Llc · NSN 2815-00-517-9835 · FSC 2815 · No Item Name Available
Verified by PartsTable
NSN 2815-00-517-9835 — this item is cataloged by the U.S. Government under National Stock Number 2815-00-517-9835. Primary manufacturer part number: 54216B.
Features
  • Ring,piston — FSC 2815
  • Radial Wall Thickness: 0.4250 INCHES MINIMUM AND 0.4400 INCHES MAXIMUM IN
  • Standard Bore Diameter: 12.500 INCHES IN
  • Material: IRON OVERALL
  • Cross-Sectional Shape Style: PLAIN RECTANGULAR, STRAIGHT FACE
  • Ring Style: CONCENTRIC
  • Joint Style: DIAGONAL JOINT
  • 3 verified cross-references
Applications
  • Applications requiring Iron Overall construction
General Description

The Ring,piston, cataloged under National Stock Number 2815-00-517-9835, is classified within Federal Supply Class 2815 (No Item Name Available) of the Engines, Turbines, and Components group. The primary manufacturer of record is Fairbanks Morse, Llc. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN2815-00-517-9835
Primary Part Number54216B
Item NameRing,piston
FSC / FSG2815 / 28 — No Item Name Available
ManufacturerFairbanks Morse, Llc
StatusCANCELLED
Radial Wall Thickness0.4250 INCHES MINIMUM AND 0.4400 INCHES MAXIMUM IN
Standard Bore Diameter12.500 INCHES IN
MaterialIRON OVERALL
Cross-Sectional Shape StylePLAIN RECTANGULAR, STRAIGHT FACE
Ring StyleCONCENTRIC
Joint StyleDIAGONAL JOINT
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
2915-00-119-46653240 INTERCHANGEABLE
Cover,fuel Pump
Triumph Engine Control Systems Llc
4730-00-196-14763240 INTERCHANGEABLE
Nipple,pipe
Crane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp.
4730-00-200-09123240 INTERCHANGEABLE
Nut,tube Coupling
Brinkley Technology Group Llc Dba Hercules Manufacturing
2530-00-471-82505459221 INTERCHANGEABLE
Cylinder Assembly,hydraulic Brak
General Motors Llc Dba General Motors Llc
6145-00-493-1539 INTERCHANGEABLE
Cable,special Purpose,electrical
5945-00-665-98913240 INTERCHANGEABLE
Relay,electromagnetic
Micro Computer Consultants Inc Quality Accessories and Instruments Div
5950-00-678-25143240 INTERCHANGEABLE
Transformer,power
Precision Electronics, Inc
1560-00-939-85763240 INTERCHANGEABLE
Seal,shaft
Alternative Surface Grinding Corp.
5915-01-007-7113582R699H01 INTERCHANGEABLE
Filter,band Pass
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
5820-01-010-07263240 INTERCHANGEABLE
Resistor Rod-Pad Assembly
Electro-Metrics Corporation Dba Electro-Metrics
Cross-Reference Index
Part NumberManufacturer
54216B PRIMARY Fairbanks Morse, Llc (USA)
3240 PRIMARY Kaydon Ring & Seal Inc Dba Skf Precision Technologies (USA)
54216B Coltec Industries Inc Dba Fairbanks Morse Engine Fm/alco (USA)
Related Parts
2915-00-119-4665INTERCHANGEABLE
COVER,FUEL PUMP
3240
4730-00-196-1476INTERCHANGEABLE
NIPPLE,PIPE
3240
4730-00-200-0912INTERCHANGEABLE
NUT,TUBE COUPLING
3240
2530-00-471-8250INTERCHANGEABLE
CYLINDER ASSEMBLY,HYDRAULIC BRAK
5459221
6145-00-493-1539INTERCHANGEABLE
CABLE,SPECIAL PURPOSE,ELECTRICAL
5945-00-665-9891INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
3240
5950-00-678-2514INTERCHANGEABLE
TRANSFORMER,POWER
3240
1560-00-939-8576INTERCHANGEABLE
SEAL,SHAFT
3240
5915-01-007-7113INTERCHANGEABLE
FILTER,BAND PASS
582R699H01
5820-01-010-0726INTERCHANGEABLE
RESISTOR ROD-PAD ASSEMBLY
3240
5120-01-018-8980INTERCHANGEABLE
BIT,SCREWDRIVER
6680-01-080-0194INTERCHANGEABLE
INDICATOR,LIQUID QUANTITY
3240

Frequently Asked Questions

What is NSN 2815-00-517-9835?

NSN 2815-00-517-9835 is a Ring,piston, manufactured by Fairbanks Morse, Llc, classified under FSC 2815 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 2815-00-517-9835?

NSN 2815-00-517-9835 has 3 cross-referenced part numbers: 54216B (Fairbanks Morse, Llc), 3240 (Kaydon Ring & Seal Inc Dba Skf Precision Technologies), 54216B (Coltec Industries Inc Dba Fairbanks Morse Engine Fm/alco).

What NSN replaces 2815-00-517-9835?

There are 12 known substitutes for 2815-00-517-9835: 2915-00-119-4665, 4730-00-196-1476, 4730-00-200-0912 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 54216B?

Key specifications for 54216B: Radial Wall Thickness: 0.4250 INCHES MINIMUM AND 0.4400 INCHES MAXIMUM IN; Standard Bore Diameter: 12.500 INCHES IN; Material: IRON OVERALL; Cross-Sectional Shape Style: PLAIN RECTANGULAR, STRAIGHT FACE. 7 total characteristics are documented in the Federal Logistics Information System.

Is NSN 2815-00-517-9835 still in active supply?

NSN 2815-00-517-9835 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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