The External Speech Cone Assembly, cataloged under National Stock Number 4240-01-397-8300, 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 Interspiro Inc. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4240-01-397-8300 |
| Primary Part Number | 460190400 |
| Item Name | External Speech Cone Assembly |
| FSC / FSG | 4240 / 42 — Safety and Rescue Equipment |
| Manufacturer | Interspiro Inc |
| Status | ACTIVE |
| Material | PLASTIC |
| 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 |
|---|---|
| 460190400 PRIMARY | Interspiro Inc (USA) |
| 460.190.400 | Interspiro B.v. (NLD) |
| Reference | Meaning |
|---|---|
| 336-190-774 | 5/9 Secondary reference Interspiro Inc |
NSN 4240-01-397-8300 is a External Speech Cone Assembly, manufactured by Interspiro Inc, classified under FSC 4240, Safety and Rescue Equipment. Status: active.
NSN 4240-01-397-8300 has 2 manufacturer part numbers on file: 460190400 (Interspiro Inc), 460.190.400 (Interspiro B.v.).
Key specifications for 460190400: Special Features: MEETS NIOSH/MSHA APPROVAL FOR INTRINSICALLY SAFE APPARATUS, FOR FACE MASK P/N 336-890-083; Material: PLASTIC. 1 specification is 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.