PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

T7901MRing Set,piston

Trw Inc Trw Intl Trade Government Sales Dept · NSN 2805-00-853-5678 · FSC 2805 · No Item Name Available
Verified by PartsTable
NSN 2805-00-853-5678 — this item is cataloged by the U.S. Government under National Stock Number 2805-00-853-5678. Primary manufacturer part number: T7901M.
Features
  • Ring Set,piston — FSC 2805
  • 5 verified cross-references
  • Primary manufacturer: Trw Inc Trw Intl Trade Government Sales Dept
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Ring Set,piston, cataloged under National Stock Number 2805-00-853-5678, is classified within Federal Supply Class 2805 (No Item Name Available) of the Engines, Turbines, and Components group. The primary manufacturer of record is Trw Inc Trw Intl Trade Government Sales Dept. This item has 5 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameRing Set,piston
FSC / FSG2805 — No Item Name Available (FSG 28)
ManufacturersDana Corp Engine Products Div (CAGE 77220); Tld Wollard Llc (CAGE 44185); Trw Inc Trw Intl Trade Government Sales Dept (CAGE 31033); Atwood Fence Co Inc (CAGE 93334); Chrysler Realty Company Llc Dba Daimler Chrysler (CAGE 12204)
Technical Specifications
ParameterValue
NSN2805-00-853-5678
Primary Part NumberT7901M
Item NameRing Set,piston
FSC / FSG2805 / 28 — No Item Name Available
ManufacturerTrw Inc Trw Intl Trade Government Sales Dept
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
3110-00-100-063402820 INTERCHANGEABLE
Cup,tapered Roller Bearing
The Timken Corporation
1351-00-119-2704LD550030 INTERCHANGEABLE
Booster,destructor,
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
3120-00-684-1140LS3859F4-6 INTERCHANGEABLE
Bushing,sleeve
Lockheed Martin Corp
5905-00-833-30824985 INTERCHANGEABLE
Resistor,variable,wire Wound,non
Magtrol Inc. Dba Magtrol Inc
5340-00-953-6630 INTERCHANGEABLE
Caster,swivel
5950-00-970-5227 INTERCHANGEABLE
Transformer,power
5935-00-990-6650347C328H01 INTERCHANGEABLE
Connector,plug,electrical
Westinghouse Electric Corp
5330-01-013-78494985 INTERCHANGEABLE
Seal,plain Encased
Skf Usa Inc. Dba Skf Aerospace Sealing Solutions
5935-01-187-74524985 INTERCHANGEABLE
Insert,electrical Connector
Winchester Interconnect Corporation Dba Winchester Interconnect Div Winchester Interconnect
5305-01-302-48404985 INTERCHANGEABLE
Setscrew
Cascade Corp
Cross-Reference Index
Part NumberManufacturer
4985 Dana Corp Engine Products Div (USA)
15706 Tld Wollard Llc (USA)
T7901M PRIMARY Trw Inc Trw Intl Trade Government Sales Dept (USA)
2421706 Atwood Fence Co Inc (USA)
2421706 Chrysler Realty Company Llc Dba Daimler Chrysler (USA)
Related Parts
3110-00-100-0634INTERCHANGEABLE
CUP,TAPERED ROLLER BEARING
02820
1351-00-119-2704INTERCHANGEABLE
BOOSTER,DESTRUCTOR,
LD550030
3120-00-684-1140INTERCHANGEABLE
BUSHING,SLEEVE
LS3859F4-6
5905-00-833-3082INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,NON
4985
5340-00-953-6630INTERCHANGEABLE
CASTER,SWIVEL
5950-00-970-5227INTERCHANGEABLE
TRANSFORMER,POWER
5935-00-990-6650INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
347C328H01
5330-01-013-7849INTERCHANGEABLE
SEAL,PLAIN ENCASED
4985
5935-01-187-7452INTERCHANGEABLE
INSERT,ELECTRICAL CONNECTOR
4985
5305-01-302-4840INTERCHANGEABLE
SETSCREW
4985
6530-01-306-1738INTERCHANGEABLE
DRAPE,OPERATING MICROSCOPE
4985
4810-01-498-7918INTERCHANGEABLE
PISTON,VALVE
4985

Frequently Asked Questions

What is NSN 2805-00-853-5678?

NSN 2805-00-853-5678 is a Ring Set,piston, manufactured by Trw Inc Trw Intl Trade Government Sales Dept, classified under FSC 2805 (No Item Name Available). Status: active.

What are the part numbers for NSN 2805-00-853-5678?

NSN 2805-00-853-5678 has 5 cross-referenced part numbers: 4985 (Dana Corp Engine Products Div), 15706 (Tld Wollard Llc), T7901M (Trw Inc Trw Intl Trade Government Sales Dept), 2421706 (Atwood Fence Co Inc), 2421706 (Chrysler Realty Company Llc Dba Daimler Chrysler).

What NSN replaces 2805-00-853-5678?

There are 12 known substitutes for 2805-00-853-5678: 3110-00-100-0634, 1351-00-119-2704, 3120-00-684-1140 and 9 more. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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