FSC 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment · FSG 16 — Aircraft Components and Accessories
Government record, cited
Also searched as1660-00-006-7971 ·
1660000067971 ·
NIIN 000067971 ·
00-006-7971 ·
FSC 1660 Aircraft Air Conditioning, Heating, and Pressurizing Equipment · 161655-1 · 3161655-1
Nearby stock numbers← 1660-00-006-7970 Valve, Modulation, Cabin Hot Air
·
1660-00-006-7974 Cap, Threaded, Turbofan →
Features
Retainer,piston Ring — FSC 1660
General Characteristics Item Description: STAINLESS STEEL,1.372 IN. OD,0.193 IN. ID,0.032 IN. THK IN
Identification
NSN: 1660-00-006-7971
NIIN: 000067971
FSC: 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment
FSG: 16 — Aircraft Components and Accessories
General Description
The Retainer,piston Ring, cataloged under National Stock Number 1660-00-006-7971, is classified within Federal Supply Class 1660 (Aircraft Air Conditioning, Heating, and Pressurizing Equipment) of the Aircraft Components and Accessories group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
1660-00-006-7971
Item Name
Retainer,piston Ring
FSC / FSG
1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment
Status
ACTIVE
General Characteristics Item Description
STAINLESS STEEL,1.372 IN. OD,0.193 IN. ID,0.032 IN. THK 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
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
161655-1
3/2Design control — primary reference
U.S. Government activity
3161655-1
5/2Secondary reference
U.S. Government activity
No interchangeability data on file.
Other items in FSC 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
1660-00-001-1693
DUCT ASSEMBLY,AIR CONDITIONING-H
1660-00-001-1754
BAFFLE,AIR
1660-00-001-2491
CAGE,BYPASS VALVE
1660-00-001-2493
1660-00-001-2493 · Item name not on file
1660-00-001-2496
CONTROL BOX,ELECTRICAL-ELECTRONI
1660-00-001-2497
1660-00-001-2497 · Item name not on file
1660-00-001-4130
1660-00-001-4130 · Item name not on file
1660-00-001-4479
CONTROLLER,AIR PRESSURE,AIRCRAFT
Frequently Asked Questions
What is NSN 1660-00-006-7971?
NSN 1660-00-006-7971 is a Retainer,piston Ring, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
What are the specifications of 1660-00-006-7971?
Key specifications for 1660-00-006-7971: General Characteristics Item Description: STAINLESS STEEL,1.372 IN. OD,0.193 IN. ID,0.032 IN. THK IN. 1 specification is documented in the U.S. Government catalog.
Is NSN 1660-00-006-7971 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.