NSN 1660-01-055-2172 · NIIN 010552172 · Part number 28800
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 1660-01-055-2172 — this item is cataloged by the U.S. Government under National Stock Number 1660-01-055-2172. Manufacturer of record part number: 28800.
Also searched as1660-01-055-2172 ·
1660010552172 ·
NIIN 010552172 ·
01-055-2172 ·
FSC 1660 Aircraft Air Conditioning, Heating, and Pressurizing Equipment · CAGE 73030 · 28800
General Characteristics Item Description: ALUMINUM ALLOY 6061 TYPE IV PER DCC 490,SURFACE TREATMENT CHEMICAL FILM PER MIL-C-5541 CL 1A,1.312 IN. MAX 1.308 IN. MIN DIA,1.000 IN. H A
1 manufacturer part number on file
Manufacturer of record: Hamilton Sundstrand Corporation Dba Collins Aerospace
Identification
NSN: 1660-01-055-2172
NIIN: 010552172
FSC: 1660 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment
FSG: 16 — Aircraft Components and Accessories
Primary part number: 28800
Manufacturer: Hamilton Sundstrand Corporation Dba Collins Aerospace
General Description
The Piston,actuating,valve, cataloged under National Stock Number 1660-01-055-2172, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 7 items share a part number with this NSN in the catalog (possible match — not a government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
1660-01-055-2172
Primary Part Number
28800
Item Name
Piston,actuating,valve
FSC / FSG
1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment
Manufacturer
Hamilton Sundstrand Corporation Dba Collins Aerospace
Status
ACTIVE
General Characteristics Item Description
ALUMINUM ALLOY 6061 TYPE IV PER DCC 490,SURFACE TREATMENT CHEMICAL FILM PER MIL-C-5541 CL 1A,1.312 IN. MAX 1.308 IN. MIN DIA,1.000 IN. H A
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL Q — CCL Item — Commerce Control List
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
⇄Related Items7
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
4730-01-096-32732780418-101POSSIBLE MATCH
PLUG,AIRCRAFT FUEL TANK
Possible match (shared part number)Parker Hannifin Corporation Div Aerospace Group Headquarters
5905-01-296-816128800POSSIBLE MATCH
RESISTOR,FIXED,FILM
Possible match (shared part number)Lds Test and Measurement Llc
4810-01-348-588628800POSSIBLE MATCH
HOUSING,PLUNGER,ACTUATOR
Possible match (shared part number)Moog Inc. Dba Ampac-Isp Corp
5330-01-362-4410288-00POSSIBLE MATCH
PACKING MATERIAL
Possible match (shared part number)Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
4320-01-417-998828800POSSIBLE MATCH
HEAD,PUMP RECIPROCATING
Possible match (shared part number)Pulsafeeder Inc
5950-01-436-118128800POSSIBLE MATCH
TRANSFORMER,POWER
Possible match (shared part number)Glassline Corp Div Glassline Corporation
5325-01-613-238528800POSSIBLE MATCH
GROMMET,NONMETALLIC
Possible match (shared part number)Silver Eagle Manufacturing Co
Hamilton Sundstrand Corporation Dba Collins Aerospace (USA)
Reference documents
Reference
Meaning
28800
5/9Secondary reference
United Technologies Corp Hamilton Sundstrand Corp
Related Parts
4730-01-096-3273POSSIBLE MATCH
PLUG,AIRCRAFT FUEL TANK
2780418-101
5905-01-296-8161POSSIBLE MATCH
RESISTOR,FIXED,FILM
28800
4810-01-348-5886POSSIBLE MATCH
HOUSING,PLUNGER,ACTUATOR
28800
5330-01-362-4410POSSIBLE MATCH
PACKING MATERIAL
288-00
4320-01-417-9988POSSIBLE MATCH
HEAD,PUMP RECIPROCATING
28800
5950-01-436-1181POSSIBLE MATCH
TRANSFORMER,POWER
28800
5325-01-613-2385POSSIBLE MATCH
GROMMET,NONMETALLIC
28800
Frequently Asked Questions
What is NSN 1660-01-055-2172?
NSN 1660-01-055-2172 is a Piston,actuating,valve, 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 1660-01-055-2172?
NSN 1660-01-055-2172 has 1 manufacturer part number on file: 28800 (Hamilton Sundstrand Corporation Dba Collins Aerospace).
What NSN replaces 1660-01-055-2172?
7 possible matches (shared part number, not a government interchangeability claim): 4730-01-096-3273, 5905-01-296-8161, 4810-01-348-5886. Verify interchangeability with system specifications before substitution.
What are the specifications of 28800?
Key specifications for 28800: General Characteristics Item Description: ALUMINUM ALLOY 6061 TYPE IV PER DCC 490,SURFACE TREATMENT CHEMICAL FILM PER MIL-C-5541 CL 1A,1.312 IN. MAX 1.308 IN. MIN DIA,1.000 IN. H A; End Item Identification: VALVE P/N 11131-2 ACFT F16A/B. 1 specification is documented in the U.S. Government catalog.
Is NSN 1660-01-055-2172 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 1660-01-055-2172?
NSN 1660-01-055-2172 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.