The Piston,control, cataloged under National Stock Number 1660-00-050-0487, 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 Triumph Thermal Systems - Maryland, Inc.. 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 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1660-00-050-0487 |
| Primary Part Number | 12538-1 |
| Item Name | Piston,control |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | Triumph Thermal Systems - Maryland, Inc. |
| Status | ACTIVE |
| General Characteristics Item Description | ALUMINUM ALLOY,ANODIZED,1.660 IN. OD,0.517 IN. ID,0.032 IN. STOCK THK,0.600 IN. LG IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 12538-1 PRIMARY | Triumph Thermal Systems - Maryland, Inc. (USA) |
NSN 1660-00-050-0487 is a Piston,control, manufactured by Triumph Thermal Systems - Maryland, Inc., classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-00-050-0487 has 1 manufacturer part number on file: 12538-1 (Triumph Thermal Systems - Maryland, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 3120-00-815-6761. Verify interchangeability with system specifications before substitution.
Key specifications for 12538-1: General Characteristics Item Description: ALUMINUM ALLOY,ANODIZED,1.660 IN. OD,0.517 IN. ID,0.032 IN. STOCK THK,0.600 IN. LG IN. 1 specification is documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
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.