The Lens,outer,respirator, cataloged under National Stock Number 4240-01-421-4408, 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 E. D. Bullard Company Dba Ed Bullard Co. 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 | 4240-01-421-4408 |
| Primary Part Number | MB1 |
| Item Name | Lens,outer,respirator |
| FSC / FSG | 4240 / 42 — Safety and Rescue Equipment |
| Manufacturer | E. D. Bullard Company Dba Ed Bullard Co |
| Status | ACTIVE |
| 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 |
|---|---|
| MB1 PRIMARY | E. D. Bullard Company Dba Ed Bullard Co (USA) |
NSN 4240-01-421-4408 is a Lens,outer,respirator, manufactured by E. D. Bullard Company Dba Ed Bullard Co, classified under FSC 4240, Safety and Rescue Equipment. Status: active.
NSN 4240-01-421-4408 has 1 manufacturer part number on file: MB1 (E. D. Bullard Company Dba Ed Bullard Co).
Key specifications for MB1: Special Features: 0.020 IN. THICK PETG; SOLE SOURCE REQUIRED BY STATUTE 6.302; COMPONENT OF NIOSH APPROVAL TC-19C-314 IN; End Item Identification: RESPIRATOR, E.D. BULLARD COMPANY, MB30 SERIES AIRLINE RESPIRATORS. 0 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.