The Elbow,air Conditioning-Heating, cataloged under National Stock Number 4520-01-617-1934, is classified within Federal Supply Class 4520 (Space and Water Heating Equipment) of the Plumbing, Heating, and Waste Disposal group. The manufacturer of record is Sae International Dba Sae International. Government technical data includes 2 specifications, 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4520-01-617-1934 |
| Primary Part Number | AS1581W04 |
| Item Name | Elbow,air Conditioning-Heating |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Sae International Dba Sae International |
| Status | ACTIVE |
| Overall Diameter | 0.212 INCHES NOMINAL IN |
| Supplementary Features | 3000 PSI |
| 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 |
|---|---|
| AS1581W04 PRIMARY | Sae International Dba Sae International (USA) |
| Reference | Meaning |
|---|---|
| SAE-AS1339 | 3/1 Design control — primary reference Sae International Dba Sae International |
| SAE-AS158 | 5/9 Secondary reference Sae International Dba Sae International |
| AS1581W04 | 3/9 Design control — primary reference U.S. Government activity |
NSN 4520-01-617-1934 is a Elbow,air Conditioning-Heating, manufactured by Sae International Dba Sae International, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-01-617-1934 has 1 manufacturer part number on file: AS1581W04 (Sae International Dba Sae International).
Key specifications for AS1581W04: Overall Diameter: 0.212 INCHES NOMINAL IN; Supplementary Features: 3000 PSI; Overall Length: 0.789 INCHES NOMINAL IN; Special Features: NOMINAL TUBE SIZE: .250" NOMINAL; TUBE WALL SIZE: .016" NOMINAL. 2 specifications are 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.