The Lens,helmet,welder's, cataloged under National Stock Number 4240-01-529-3554, 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 Kirby Morgan Dive Systems Inc. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4240-01-529-3554 |
| Primary Part Number | 525-411 |
| Item Name | Lens,helmet,welder's |
| FSC / FSG | 4240 / 42 — Safety and Rescue Equipment |
| Manufacturer | Kirby Morgan Dive Systems Inc |
| Status | ACTIVE |
| Lens Type | COVER |
| Material | GLASS |
| 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 |
|---|---|
| 525-411 PRIMARY | Kirby Morgan Dive Systems Inc (USA) |
NSN 4240-01-529-3554 is a Lens,helmet,welder's, manufactured by Kirby Morgan Dive Systems Inc, classified under FSC 4240, Safety and Rescue Equipment. Status: active.
NSN 4240-01-529-3554 has 1 manufacturer part number on file: 525-411 (Kirby Morgan Dive Systems Inc).
Key specifications for 525-411: Lens Type: COVER; Overall Length: 5.000 INCHES NOMINAL IN; Overall Width: 4.000 INCHES NOMINAL IN; Material: GLASS. 2 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.