PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

25020Cooler,lubricating Oil,engine

Williams International Co., L.l.c. · NSN 2935-00-622-7640 · FSC 2935 · No Item Name Available
Verified by PartsTable
NSN 2935-00-622-7640 — this item is cataloged by the U.S. Government under National Stock Number 2935-00-622-7640. Primary manufacturer part number: 25020.
Features
  • Cooler,lubricating Oil,engine — FSC 2935
  • Heat Transfer Method: INDIRECT
  • Reference Number Differentiating Characteristics: AS DIFFERENTIATED BY THE SOURCE CONTROL DWG NO.
  • 3 verified cross-references
  • Primary manufacturer: Williams International Co., L.l.c.
Applications
  • Mechanical power generation
  • Drive system operation
  • Auxiliary equipment operation
General Description

The Cooler,lubricating Oil,engine, cataloged under National Stock Number 2935-00-622-7640, is classified within Federal Supply Class 2935 (No Item Name Available) of the Engine Accessories group. The primary manufacturer of record is Williams International Co., L.l.c.. Government technical data includes 2 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: Active.

Technical Specifications
ParameterValue
NSN2935-00-622-7640
Primary Part Number25020
Item NameCooler,lubricating Oil,engine
FSC / FSG2935 / 29 — No Item Name Available
ManufacturerWilliams International Co., L.l.c.
StatusACTIVE
Heat Transfer MethodINDIRECT
Reference Number Differentiating CharacteristicsAS DIFFERENTIATED BY THE SOURCE CONTROL DWG NO.
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5360-00-300-753625020 INTERCHANGEABLE
Spring,valve
Hdt Expeditionary Systems Inc
4730-00-569-9649250-20 INTERCHANGEABLE
Adapter,straight,pipe to Tube
Lenz Inc Dba the Lenz Company
6125-00-635-3770 INTERCHANGEABLE
Dynamotor-Power Supply
5905-00-853-3904 INTERCHANGEABLE
Resistor,fixed,wire Wound,induct
5120-01-074-5211THD420L INTERCHANGEABLE
Inserter,screw Thread Insert
Howmet Global Fastening Systems Inc. Div Tridair Products
6685-01-174-84172-5020 INTERCHANGEABLE
Gage,differential,dial Indicatin
Dwyer Instruments Inc
4730-01-178-0297 INTERCHANGEABLE
Coupling,pipe
4710-01-185-44808J4875 INTERCHANGEABLE
Tube Assembly,metal
Caterpillar Inc Div Caterpillar Defense
4730-01-323-508925020-1-TN INTERCHANGEABLE
Coupling,pipe
Rhba Acquisitions, Llc Dba Red Head Brass
5998-01-345-1547 INTERCHANGEABLE
Circuit Card Assembly
Cross-Reference Index
Part NumberManufacturer
25020 Williams International Co., L.l.c. (USA)
56976A General Motors Corp Harrison Radiator Div (USA)
5D430-001 Grimes Aerospace Company (USA)
Related Parts
5360-00-300-7536INTERCHANGEABLE
SPRING,VALVE
25020
4730-00-569-9649INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO TUBE
250-20
6125-00-635-3770INTERCHANGEABLE
DYNAMOTOR-POWER SUPPLY
5905-00-853-3904INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND,INDUCT
5120-01-074-5211INTERCHANGEABLE
INSERTER,SCREW THREAD INSERT
THD420L
6685-01-174-8417INTERCHANGEABLE
GAGE,DIFFERENTIAL,DIAL INDICATIN
2-5020
4730-01-178-0297INTERCHANGEABLE
COUPLING,PIPE
4710-01-185-4480INTERCHANGEABLE
TUBE ASSEMBLY,METAL
8J4875
4730-01-323-5089INTERCHANGEABLE
COUPLING,PIPE
25020-1-TN
5998-01-345-1547INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
6515-01-348-8208INTERCHANGEABLE
OTOSCOPE
238-3
6650-01-459-1708INTERCHANGEABLE
FIXTURE,TEST,OPTICAL EQUIPMENT
25020

Frequently Asked Questions

What is NSN 2935-00-622-7640?

NSN 2935-00-622-7640 is a Cooler,lubricating Oil,engine, manufactured by Williams International Co., L.l.c., classified under FSC 2935 (No Item Name Available). Status: active.

What are the part numbers for NSN 2935-00-622-7640?

NSN 2935-00-622-7640 has 3 cross-referenced part numbers: 25020 (Williams International Co., L.l.c.), 56976A (General Motors Corp Harrison Radiator Div), 5D430-001 (Grimes Aerospace Company).

What NSN replaces 2935-00-622-7640?

There are 12 known substitutes for 2935-00-622-7640: 5360-00-300-7536, 4730-00-569-9649, 6125-00-635-3770 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 25020?

Key specifications for 25020: Heat Transfer Method: INDIRECT; Reference Number Differentiating Characteristics: AS DIFFERENTIATED BY THE SOURCE CONTROL DWG NO.; Special Features: INTEGRAL RELIEF VALVE. 3 total characteristics are documented in the Federal Logistics Information System.

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