The Cover,filter,respirator, cataloged under National Stock Number 4240-01-531-6439, is classified within Federal Supply Class 4240 (Safety and Rescue Equipment) of the Fire Fighting, Rescue, and Safety Equipment group. The manufacturer of record is Anderson Metal Industries 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4240-01-531-6439 |
| Primary Part Number | AE6263428 |
| Item Name | Cover,filter,respirator |
| FSC / FSG | 4240 / 42 — Safety and Rescue Equipment |
| Manufacturer | Anderson Metal Industries Inc |
| Status | ACTIVE |
| Overall Diameter | 23.750 INCHES NOMINAL IN |
| Surface Treatment | ANODIZE |
| Material | ALUMINUM ALLOY AND RUBBER SYNTHETIC |
| 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 |
|---|---|
| AE6263428 PRIMARY | Anderson Metal Industries Inc (USA) |
| Reference | Meaning |
|---|---|
| 6263428 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 4240-01-531-6439 is a Cover,filter,respirator, manufactured by Anderson Metal Industries Inc, classified under FSC 4240, Safety and Rescue Equipment. Status: active.
NSN 4240-01-531-6439 has 1 manufacturer part number on file: AE6263428 (Anderson Metal Industries Inc).
Key specifications for AE6263428: Overall Diameter: 23.750 INCHES NOMINAL IN; Special Features: 8 0.469 IN DIA. HOLES EQUALLY-SPACED ON A 22.470 IN DIA. BOLT CIRCLE; ID IS 20.000 IN DIA.; THIS ITEM CONSISTS OF A COVER AND A GASKET IN; Surface Treatment: ANODIZE; Part Name Assigned by Controlling Agency: COVER,FILTER CLOSURE. 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.