The Pipe,air Conditioning-Heating, cataloged under National Stock Number 4520-01-134-8256, 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 U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4520-01-134-8256 |
| Primary Part Number | 12300035 |
| Item Name | Pipe,air Conditioning-Heating |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Length | 3.380 INCHES NOMINAL IN |
| Shape | ROUND |
| Construction | SINGLE |
| Material | ALUMINUM ALLOY 5086 |
| Cross-Sectional Diameter | 5.500 INCHES NOMINAL IN |
| Material Thickness | 0.0900 INCHES 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 |
|---|---|
| 12300035 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 10085992 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 4520-01-134-8256 is a Pipe,air Conditioning-Heating, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-01-134-8256 has 1 manufacturer part number on file: 12300035 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12300035: Length: 3.380 INCHES NOMINAL IN; Shape: ROUND; Construction: SINGLE; Material: ALUMINUM ALLOY 5086. 6 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.