The Register,air, cataloged under National Stock Number 4520-01-421-5142, 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 Bae Systems Land & Armaments L.p.. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4520-01-421-5142 |
| Primary Part Number | 70-04712 |
| Item Name | Register,air |
| FSC / FSG | 4520 / 45 — Space and Water Heating Equipment |
| Manufacturer | Bae Systems Land & Armaments L.p. |
| Status | ACTIVE |
| Shape | RECTANGULAR |
| Frame Removability | REMOVABLE |
| Deflector Blade Operating Method | HAND-LEVER |
| Material | PLASTIC |
| Grille Quantity | 6 |
| 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 |
|---|---|
| 70-04712 | Amz Alabama Inc. (USA) |
| 70-04712 PRIMARY | Bae Systems Land & Armaments L.p. (USA) |
| Reference | Meaning |
|---|---|
| 70-04712 | 3/9 Design control — primary reference Bae Systems Survivability Systems Llc |
| 70-04712 | 5/1 Secondary reference Am General Llc |
NSN 4520-01-421-5142 is a Register,air, manufactured by Bae Systems Land & Armaments L.p., classified under FSC 4520, Space and Water Heating Equipment. Status: active.
NSN 4520-01-421-5142 has 2 manufacturer part numbers on file: 70-04712 (Amz Alabama Inc.), 70-04712 (Bae Systems Land & Armaments L.p.).
Key specifications for 70-04712: Shape: RECTANGULAR; Overall Length: 60.000 INCHES NOMINAL IN; Overall Width: 5.000 INCHES NOMINAL IN; Frame Removability: REMOVABLE. 5 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.