The Insulator,feedthru, cataloged under National Stock Number 5970-01-115-0479, is classified within Federal Supply Class 5970 (Electrical Insulators and Insulating Materials) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Austin Insulators Inc.. Government technical data includes 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5970-01-115-0479 |
| Primary Part Number | A-4447-B |
| Item Name | Insulator,feedthru |
| FSC / FSG | 5970 / 59 — Electrical Insulators and Insulating Materials |
| Manufacturer | Austin Insulators Inc. |
| Status | ACTIVE |
| Style Designator | DOUBLE, BOWL |
| Outside Diameter | 36.000 INCHES NOMINAL IN |
| Center Stud Length | 35.500 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| A-4447-B | Austin Insulators Inc. (CAN) |
| Reference | Meaning |
|---|---|
| MODEL A-4447-B | 3/9 Design control — primary reference Racal-Decca Canada Incinsulatorsdivbrampton Ont Can |
NSN 5970-01-115-0479 is a Insulator,feedthru, manufactured by Austin Insulators Inc., classified under FSC 5970, Electrical Insulators and Insulating Materials. Status: active.
NSN 5970-01-115-0479 has 1 manufacturer part number on file: A-4447-B (Austin Insulators Inc.).
Key specifications for A-4447-B: Style Designator: DOUBLE, BOWL; Outside Diameter: 36.000 INCHES NOMINAL IN; Center Stud Length: 35.500 INCHES NOMINAL IN; Special Features: OIL FILLED PORCELAIN TUBES; TUBE LENGTH OF 30 INCHES; RAIN SHIELD WITH 6.5 INCH SKIRT AND CORONA RING; 5 ELEMENT UNIT, F9 DOUBLE BOWL; WELLS IN BASE PLATE TO ALLOW FITTING OF ELEMENTS IN. 3 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.