The Arm,pressure,limiter, cataloged under National Stock Number 1660-00-347-8328, 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 Defense & Development Enterprises Llc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1660-00-347-8328 |
| Primary Part Number | 22590-2 |
| Item Name | Arm,pressure,limiter |
| FSC / FSG | 1660 / 16 — Aircraft Air Conditioning, Heating, and Pressurizing Equipment |
| Manufacturer | Defense & Development Enterprises Llc |
| Status | ACTIVE |
| General Characteristics Item Description | USED ON 5-50258 PACKAGE INSTALLATION |
| 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 |
|---|---|
| 22590-2 PRIMARY | Defense & Development Enterprises Llc (USA) |
| Reference | Meaning |
|---|---|
| 22590-2 | 3/9 Design control — primary reference Triumph Thermal Systems - Maryland, Inc. |
NSN 1660-00-347-8328 is a Arm,pressure,limiter, manufactured by Defense & Development Enterprises Llc, classified under FSC 1660, Aircraft Air Conditioning, Heating, and Pressurizing Equipment. Status: active.
NSN 1660-00-347-8328 has 1 manufacturer part number on file: 22590-2 (Defense & Development Enterprises Llc).
3 possible matches (shared part number, not a government interchangeability claim): 5950-00-913-0775, 5998-01-022-7020, 5330-01-623-6273. Verify interchangeability with system specifications before substitution.
Key specifications for 22590-2: General Characteristics Item Description: USED ON 5-50258 PACKAGE INSTALLATION. 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.