NSN 1660-01-474-6421 · NIIN 014746421 · Part number 814176-1
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 1660-01-474-6421 — this item is cataloged by the U.S. Government under National Stock Number 1660-01-474-6421. Manufacturer of record part number: 814176-1.
Also searched as1660-01-474-6421 ·
1660014746421 ·
NIIN 014746421 ·
01-474-6421 ·
FSC 1660 Aircraft Air Conditioning, Heating, and Pressurizing Equipment · CAGE 73030 · 814176-1 · 814176
Manufacturer of record: Hamilton Sundstrand Corporation Dba Collins Aerospace
Identification
NSN: 1660-01-474-6421
NIIN: 014746421
FSC: 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment
FSG: 16 — Aircraft Components and Accessories
Primary part number: 814176-1
Manufacturer: Hamilton Sundstrand Corporation Dba Collins Aerospace
General Description
The Shim,compressor, cataloged under National Stock Number 1660-01-474-6421, 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 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government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
1660-01-474-6421
Primary Part Number
814176-1
Item Name
Shim,compressor
FSC / FSG
1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment
Manufacturer
Hamilton Sundstrand Corporation Dba Collins Aerospace
Status
ACTIVE
Overall Diameter
6.700 INCHES NOMINAL IN
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 Items6
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
1660-01-474-6450814176-2POSSIBLE MATCH
SHIM,COMPRESSOR
Possible match (shared part number)Hamilton Sundstrand Corporation Dba Collins Aerospace
1660-01-474-6452814176-3POSSIBLE MATCH
SHIM,COMPRESSOR
Possible match (shared part number)Hamilton Sundstrand Corporation Dba Collins Aerospace
1660-01-474-6453814176-4POSSIBLE MATCH
SHIM,COMPRESSOR
Possible match (shared part number)Hamilton Sundstrand Corporation Dba Collins Aerospace
1660-01-474-6457814176-6POSSIBLE MATCH
SHIM,COMPRESSOR
Possible match (shared part number)Hamilton Sundstrand Corporation Dba Collins Aerospace
1660-01-474-6458814176-5POSSIBLE MATCH
SHIM,COMPRESSOR
Possible match (shared part number)Hamilton Sundstrand Corporation Dba Collins Aerospace
1660-01-474-6460814176-7POSSIBLE MATCH
SHIM,COMPRESSOR
Possible match (shared part number)Hamilton Sundstrand Corporation Dba Collins Aerospace
Hamilton Sundstrand Corporation Dba Collins Aerospace (USA)
Reference documents
Reference
Meaning
814176
D/9Drawing number reference only
Hamilton Sundstrand Corporation Dba Collins Aerospace
Related Parts
1660-01-474-6450POSSIBLE MATCH
SHIM,COMPRESSOR
814176-2
1660-01-474-6452POSSIBLE MATCH
SHIM,COMPRESSOR
814176-3
1660-01-474-6453POSSIBLE MATCH
SHIM,COMPRESSOR
814176-4
1660-01-474-6457POSSIBLE MATCH
SHIM,COMPRESSOR
814176-6
1660-01-474-6458POSSIBLE MATCH
SHIM,COMPRESSOR
814176-5
1660-01-474-6460POSSIBLE MATCH
SHIM,COMPRESSOR
814176-7
Frequently Asked Questions
What is NSN 1660-01-474-6421?
NSN 1660-01-474-6421 is a Shim,compressor, 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 1660-01-474-6421?
NSN 1660-01-474-6421 has 1 manufacturer part number on file: 814176-1 (Hamilton Sundstrand Corporation Dba Collins Aerospace).
What NSN replaces 1660-01-474-6421?
6 possible matches (shared part number, not a government interchangeability claim): 1660-01-474-6450, 1660-01-474-6452, 1660-01-474-6453. Verify interchangeability with system specifications before substitution.
What are the specifications of 814176-1?
Key specifications for 814176-1: Overall Height: 0.010 INCHES NOMINAL IN; Overall Diameter: 6.700 INCHES NOMINAL IN; Special Features: INSIDE DIAMETER 4.320 IN;13-0.277 IN. DIAMETER HOLES EQUALLY SPACED WITH 13 SLOTS SPACED INBETWEEN THE HOLES;13 SLOTS EQUALLY SPACED 0.250 FROM INSIDE DIAMETER;NEXT HIGHER ASSEMBLY IS 1660-01-454-6710;MATERIAL IS AMS 5519 OR MIL-S-5059 CL 301 FULL HARD PER HS178;HT TR IN; End Item Identification: P/N 814291-6 REFRIGERATION PACKAGE. 1 specification is documented in the U.S. Government catalog.
Is NSN 1660-01-474-6421 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.