NSN 2935-00-993-7521 · NIIN 009937521 · Part number 576229
Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney · FSC 2935 — Engine System Cooling Components, Aircraft Prime Moving · FSG 29 — Engine Accessories · CAGE 77445
Government record, cited
NSN 2935-00-993-7521 — this item is cataloged by the U.S. Government under National Stock Number 2935-00-993-7521. Manufacturer of record part number: 576229.
Also searched as2935-00-993-7521 ·
2935009937521 ·
NIIN 009937521 ·
00-993-7521 ·
FSC 2935 Engine System Cooling Components, Aircraft Prime Moving · CAGE 77445 · 576229
General Characteristics Item Description: CRES AMS5355; ROCKWELL HARDNESS SCALE C35-42 OR EQUIVALENT; 2.230 IN. LG O/A,1.199 IN. MIN AND 1.200 IN. MAX O/A DIA,0.230 IN. MIN AND 0.240 IN. MAX ID IN
1 manufacturer part number on file
Manufacturer of record: Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney
Identification
NSN: 2935-00-993-7521
NIIN: 009937521
FSC: 2935 — Engine System Cooling Components, Aircraft Prime Moving
FSG: 29 — Engine Accessories
Primary part number: 576229
Manufacturer: Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney
General Description
The Valve,bypass,oil Cooler, cataloged under National Stock Number 2935-00-993-7521, is classified within Federal Supply Class 2935 (Engine System Cooling Components, Aircraft Prime Moving) of the Engine Accessories group. The manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
2935-00-993-7521
Primary Part Number
576229
Item Name
Valve,bypass,oil Cooler
FSC / FSG
2935 / 29 — Engine System Cooling Components, Aircraft Prime Moving
Manufacturer
Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney
Status
ACTIVE
General Characteristics Item Description
CRES AMS5355; ROCKWELL HARDNESS SCALE C35-42 OR EQUIVALENT; 2.230 IN. LG O/A,1.199 IN. MIN AND 1.200 IN. MAX O/A DIA,0.230 IN. MIN AND 0.240 IN. MAX ID IN
Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA)
No interchangeability data on file.
Other items in FSC 2935 — Engine System Cooling Components, Aircraft Prime Moving
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
2935-00-000-0105
CAP,FILLER OPENING
2935-00-003-5905
2935-00-003-5905 · Item name not on file
2935-00-006-5833
2935-00-006-5833 · Item name not on file
2935-00-008-9559
PISTON,VALVE,OIL COOLER
2935-00-009-1568
2935-00-009-1568 · Item name not on file
2935-00-010-5525
2935-00-010-5525 · Item name not on file
2935-00-012-0059
CAP,FILLER OPENING
2935-00-016-4931
2935-00-016-4931 · Item name not on file
Frequently Asked Questions
What is NSN 2935-00-993-7521?
NSN 2935-00-993-7521 is a Valve,bypass,oil Cooler, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 2935, Engine System Cooling Components, Aircraft Prime Moving. Status: active.
What part numbers are listed for NSN 2935-00-993-7521?
NSN 2935-00-993-7521 has 1 manufacturer part number on file: 576229 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
What are the specifications of 576229?
Key specifications for 576229: General Characteristics Item Description: CRES AMS5355; ROCKWELL HARDNESS SCALE C35-42 OR EQUIVALENT; 2.230 IN. LG O/A,1.199 IN. MIN AND 1.200 IN. MAX O/A DIA,0.230 IN. MIN AND 0.240 IN. MAX ID IN. 1 specification is documented in the U.S. Government catalog.
Is NSN 2935-00-993-7521 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
What is the DEMIL code for NSN 2935-00-993-7521?
NSN 2935-00-993-7521 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
Sources
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.