PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

204-71Ring Set,piston

Dresser, Llc · NSN 2805-00-390-3442 · FSC 2805 · No Item Name Available
Verified by PartsTable
NSN 2805-00-390-3442 — this item is cataloged by the U.S. Government under National Stock Number 2805-00-390-3442. Primary manufacturer part number: 204-71.
Features
  • Ring Set,piston — FSC 2805
  • Piston Accommodation Quantity: 1
  • Standard Bore Diameter: 5.000 INCHES IN
  • Ring Set Component Parts: COMPRESSION RING,18-235,35301,2,OIL RING,18-236,35301,1
  • 2 verified cross-references
  • Primary manufacturer: Dresser, Llc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Ring Set,piston, cataloged under National Stock Number 2805-00-390-3442, is classified within Federal Supply Class 2805 (No Item Name Available) of the Engines, Turbines, and Components group. The primary manufacturer of record is Dresser, Llc. Government technical data includes 3 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. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN2805-00-390-3442
Primary Part Number204-71
Item NameRing Set,piston
FSC / FSG2805 / 28 — No Item Name Available
ManufacturerDresser, Llc
StatusCANCELLED
Piston Accommodation Quantity1
Standard Bore Diameter5.000 INCHES IN
Ring Set Component PartsCOMPRESSION RING,18-235,35301,2,OIL RING,18-236,35301,1
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 10
5950-00-090-3950NE949-12445 INTERCHANGEABLE
Transformer,pulse
Cardwell Condenser Corp Lapointe-Admiral Div
6685-00-434-4256 INTERCHANGEABLE
Bumper
5915-00-501-0546SM-C-157655 INTERCHANGEABLE
Filter,radio Frequency Interfere
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5310-00-509-212220-471 INTERCHANGEABLE
Washer,seat Locking
Dresser Industries Inc Leroi Div
1650-00-824-329620471 INTERCHANGEABLE
Retainer,plug
Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator
8120-00-882-2699 INTERCHANGEABLE
Cylinder,compressed Gas
5930-01-190-51712047-1 INTERCHANGEABLE
Switch,proximity
White Conveyors, Inc.
3020-01-317-292320471 INTERCHANGEABLE
Gear,spur
Dana Commercial Vehicle Products, Llc
4820-01-364-160220471 INTERCHANGEABLE
Piston,valve
Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems
4820-01-641-252820471 INTERCHANGEABLE
Valve,ball
United States Plastic Corp
Cross-Reference Index
Part NumberManufacturer
204-71 Dresser, Llc (USA)
204-71 Dresser Industries Inc Waukesha Engine Div (USA)
Related Parts
5950-00-090-3950INTERCHANGEABLE
TRANSFORMER,PULSE
NE949-12445
6685-00-434-4256INTERCHANGEABLE
BUMPER
5915-00-501-0546INTERCHANGEABLE
FILTER,RADIO FREQUENCY INTERFERE
SM-C-157655
5310-00-509-2122INTERCHANGEABLE
WASHER,SEAT LOCKING
20-471
1650-00-824-3296INTERCHANGEABLE
RETAINER,PLUG
20471
8120-00-882-2699INTERCHANGEABLE
CYLINDER,COMPRESSED GAS
5930-01-190-5171INTERCHANGEABLE
SWITCH,PROXIMITY
2047-1
3020-01-317-2923INTERCHANGEABLE
GEAR,SPUR
20471
4820-01-364-1602INTERCHANGEABLE
PISTON,VALVE
20471
4820-01-641-2528INTERCHANGEABLE
VALVE,BALL
20471

Frequently Asked Questions

What is NSN 2805-00-390-3442?

NSN 2805-00-390-3442 is a Ring Set,piston, manufactured by Dresser, Llc, classified under FSC 2805 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 2805-00-390-3442?

NSN 2805-00-390-3442 has 2 cross-referenced part numbers: 204-71 (Dresser, Llc), 204-71 (Dresser Industries Inc Waukesha Engine Div).

What NSN replaces 2805-00-390-3442?

There are 10 known substitutes for 2805-00-390-3442: 5950-00-090-3950, 6685-00-434-4256, 5915-00-501-0546 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 204-71?

Key specifications for 204-71: Piston Accommodation Quantity: 1; Standard Bore Diameter: 5.000 INCHES IN; Ring Set Component Parts: COMPRESSION RING,18-235,35301,2,OIL RING,18-236,35301,1. 3 total characteristics are documented in the Federal Logistics Information System.

Is NSN 2805-00-390-3442 still in active supply?

NSN 2805-00-390-3442 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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