The Mask,chemical-Biological, cataloged under National Stock Number 4240-01-692-5636, 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 Stc S.r.l Unipersonale. Government technical data includes 5 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4240-01-692-5636 |
| Primary Part Number | STC 6300 |
| Item Name | Mask,chemical-Biological |
| FSC / FSG | 4240 / 42 — Safety and Rescue Equipment |
| Manufacturer | Stc S.r.l Unipersonale |
| Status | ACTIVE |
| Filter Type | FILTER ELEMENT |
| Face Cover Type | MUZZLE |
| Protection for Which Filter Is Designed | GASES AND ORGANIC VAPORS |
| Filter Replaceability | REPLACEABLE |
| Particulate Filter | INCLUDED |
| 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 |
|---|---|
| STC 6300 | Stc S.r.l Unipersonale (ITA) |
| Reference | Meaning |
|---|---|
| 6300 | 3/9 Design control — primary reference 3m Company Dba 3m |
NSN 4240-01-692-5636 is a Mask,chemical-Biological, manufactured by Stc S.r.l Unipersonale, classified under FSC 4240, Safety and Rescue Equipment. Status: active.
NSN 4240-01-692-5636 has 1 manufacturer part number on file: STC 6300 (Stc S.r.l Unipersonale).
Key specifications for STC 6300: Filter Type: FILTER ELEMENT; Face Cover Type: MUZZLE; Protection for Which Filter Is Designed: GASES AND ORGANIC VAPORS; Filter Replaceability: REPLACEABLE. 5 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.