PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

7309Ring Set,piston

D&w Fine Pack Llc Dba Wilkinson Industries · NSN 2805-00-303-4438 · FSC 2805 · No Item Name Available
Verified by PartsTable
NSN 2805-00-303-4438 — this item is cataloged by the U.S. Government under National Stock Number 2805-00-303-4438. Primary manufacturer part number: 7309.
Features
  • Ring Set,piston — FSC 2805
  • Piston Accommodation Quantity: 1
  • Standard Bore Diameter: 3.000 INCHES IN
  • Ring Set Component Parts: COMPRESSION RING,113A50,44940,1,COMPRESSION RING,113A7,44940,1,EXPANDER RING,113A72,44940,1,OIL RING,113A74,44940,1
  • 5 verified cross-references
  • Primary manufacturer: D&w Fine Pack Llc Dba Wilkinson Industries
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Ring Set,piston, cataloged under National Stock Number 2805-00-303-4438, is classified within Federal Supply Class 2805 (No Item Name Available) of the Engines, Turbines, and Components group. The primary manufacturer of record is D&w Fine Pack Llc Dba Wilkinson Industries. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 4 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
NSN2805-00-303-4438
Primary Part Number7309
Item NameRing Set,piston
FSC / FSG2805 / 28 — No Item Name Available
ManufacturerD&w Fine Pack Llc Dba Wilkinson Industries
StatusCANCELLED
Piston Accommodation Quantity1
Standard Bore Diameter3.000 INCHES IN
Ring Set Component PartsCOMPRESSION RING,113A50,44940,1,COMPRESSION RING,113A7,44940,1,EXPANDER RING,113A72,44940,1,OIL RING,113A74,44940,1
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5895-00-004-132265A81-C207 INTERCHANGEABLE
Converter,frequency,electronic
Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
5930-00-008-052811-0351-21 INTERCHANGEABLE
Switch,thermostatic
Scotsman Industries Inc Div Scotsman Ice Systems
3110-00-156-684416X730 INTERCHANGEABLE
Bearing,ball,annular
Garwood/feller Inc Garwood Winch Div
3110-00-156-8062 INTERCHANGEABLE
Bearing,ball,annular
5330-00-178-334511351 INTERCHANGEABLE
Seal,plain Encased
Dana Off Highway Products, Llc
3455-00-194-051010070 INTERCHANGEABLE
Cutter,milling,plain
Niagara Cutter Inc
6625-00-302-4764 INTERCHANGEABLE
Voltage Standard
3040-00-356-6972SCB77282 INTERCHANGEABLE
Shaft,belt Guide
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
3040-00-377-6787 INTERCHANGEABLE
Shaft,straight
5998-00-408-0701 INTERCHANGEABLE
Electronic Components Assembly
Cross-Reference Index
Part NumberManufacturer
8409880 U S Army Tank Automotive Command Amsta-Im-Mm (USA)
113A51 Cummins Power Generation Inc. (USA)
113-51 Cummins Power Generation Inc. (USA)
7477H Spirolox Inc (USA)
7309 PRIMARY D&w Fine Pack Llc Dba Wilkinson Industries (USA)
Related Parts
5895-00-004-1322INTERCHANGEABLE
CONVERTER,FREQUENCY,ELECTRONIC
65A81-C207
5930-00-008-0528INTERCHANGEABLE
SWITCH,THERMOSTATIC
11-0351-21
3110-00-156-6844INTERCHANGEABLE
BEARING,BALL,ANNULAR
16X730
3110-00-156-8062INTERCHANGEABLE
BEARING,BALL,ANNULAR
5330-00-178-3345INTERCHANGEABLE
SEAL,PLAIN ENCASED
11351
3455-00-194-0510INTERCHANGEABLE
CUTTER,MILLING,PLAIN
10070
6625-00-302-4764INTERCHANGEABLE
VOLTAGE STANDARD
3040-00-356-6972INTERCHANGEABLE
SHAFT,BELT GUIDE
SCB77282
3040-00-377-6787INTERCHANGEABLE
SHAFT,STRAIGHT
5998-00-408-0701INTERCHANGEABLE
ELECTRONIC COMPONENTS ASSEMBLY
3110-00-554-3289INTERCHANGEABLE
BEARING,BALL,ANNULAR
1309S
5950-00-706-9428INTERCHANGEABLE
COIL,RADIO FREQUENCY

Frequently Asked Questions

What is NSN 2805-00-303-4438?

NSN 2805-00-303-4438 is a Ring Set,piston, manufactured by D&w Fine Pack Llc Dba Wilkinson Industries, classified under FSC 2805 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 2805-00-303-4438?

NSN 2805-00-303-4438 has 5 cross-referenced part numbers: 8409880 (U S Army Tank Automotive Command Amsta-Im-Mm), 113A51 (Cummins Power Generation Inc.), 113-51 (Cummins Power Generation Inc.), 7477H (Spirolox Inc), 7309 (D&w Fine Pack Llc Dba Wilkinson Industries).

What NSN replaces 2805-00-303-4438?

There are 12 known substitutes for 2805-00-303-4438: 5895-00-004-1322, 5930-00-008-0528, 3110-00-156-6844 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 7309?

Key specifications for 7309: Piston Accommodation Quantity: 1; Standard Bore Diameter: 3.000 INCHES IN; Ring Set Component Parts: COMPRESSION RING,113A50,44940,1,COMPRESSION RING,113A7,44940,1,EXPANDER RING,113A72,44940,1,OIL RING,113A74,44940,1. 3 total characteristics are documented in the Federal Logistics Information System.

Is NSN 2805-00-303-4438 still in active supply?

NSN 2805-00-303-4438 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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