NSN 1660-00-449-1541 · NIIN 004491541 · Part number 516258
Hamilton Sundstrand Corporation Dba Collins Aerospace · FSC 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment · FSG 16 — Aircraft Components and Accessories · CAGE 73030
Government record, cited
NSN 1660-00-449-1541 — this item is cataloged by the U.S. Government under National Stock Number 1660-00-449-1541. Manufacturer of record part number: 516258.
Also searched as1660-00-449-1541 ·
1660004491541 ·
NIIN 004491541 ·
00-449-1541 ·
FSC 1660 Aircraft Air Conditioning, Heating, and Pressurizing Equipment · CAGE 73030 · 516258 · 10124-2 · 10124-2
Manufacturer of record: Hamilton Sundstrand Corporation Dba Collins Aerospace
Identification
NSN: 1660-00-449-1541
NIIN: 004491541
FSC: 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment
FSG: 16 — Aircraft Components and Accessories
Primary part number: 516258
Manufacturer: Hamilton Sundstrand Corporation Dba Collins Aerospace
General Description
The Guard, cataloged under National Stock Number 1660-00-449-1541, is classified within Federal Supply Class 1660 (Aircraft Air Conditioning, Heating, and Pressurizing Equipment) of the Aircraft Components and Accessories group. The manufacturer of record is Hamilton Sundstrand Corporation Dba Collins Aerospace. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
1660-00-449-1541
Primary Part Number
516258
Item Name
Guard
FSC / FSG
1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment
Manufacturer
Hamilton Sundstrand Corporation Dba Collins Aerospace
Status
ACTIVE
FSC Application Data
VALVE P/N 516256
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
⇄Related Items2
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5990-00-871-952810124-2POSSIBLE MATCH
RESOLVER,ELECTRICAL
Possible match (shared part number)Astronautics Corporation of America
6740-01-127-9070516258POSSIBLE MATCH
FLOAT ROTAMETER DEV
Possible match (shared part number)Eastman Kodak Co
Hamilton Sundstrand Corporation Dba Collins Aerospace (USA)
Reference documents
Reference
Meaning
10124-2
5/9Secondary reference
Pacific Airmotive Corp
Related Parts
5990-00-871-9528POSSIBLE MATCH
RESOLVER,ELECTRICAL
10124-2
6740-01-127-9070POSSIBLE MATCH
FLOAT ROTAMETER DEV
516258
Frequently Asked Questions
What is NSN 1660-00-449-1541?
NSN 1660-00-449-1541 is a Guard, manufactured by Hamilton Sundstrand Corporation Dba Collins Aerospace, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
What part numbers are listed for NSN 1660-00-449-1541?
NSN 1660-00-449-1541 has 2 manufacturer part numbers on file: 516258 (Hamilton Sundstrand Corporation Dba Collins Aerospace), 10124-2 (Hamilton Sundstrand Corporation Dba Collins Aerospace).
What NSN replaces 1660-00-449-1541?
2 possible matches (shared part number, not a government interchangeability claim): 5990-00-871-9528, 6740-01-127-9070. Verify interchangeability with system specifications before substitution.
What are the specifications of 516258?
Key specifications for 516258: FSC Application Data: VALVE P/N 516256; End Item Identification: T-33 ACFT. 1 specification is documented in the U.S. Government catalog.
Is NSN 1660-00-449-1541 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.
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.