The Hose,air Duct,air Breathing, cataloged under National Stock Number 4240-01-421-3669, is classified within Federal Supply Class 4240 (No Item Name Available) of the Fire Fighting, Rescue, and Safety Equipment group. The primary manufacturer of record is E. D. Bullard Company Dba Ed Bullard Co. This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4240-01-421-3669 |
| Primary Part Number | BT135 |
| Item Name | Hose,air Duct,air Breathing |
| FSC / FSG | 4240 / 42 — No Item Name Available |
| Manufacturer | E. D. Bullard Company Dba Ed Bullard Co |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 4240-01-421-3669 is a Hose,air Duct,air Breathing, manufactured by E. D. Bullard Company Dba Ed Bullard Co, classified under FSC 4240 (No Item Name Available). Status: active.
NSN 4240-01-421-3669 has 2 cross-referenced part numbers: B135 (E. D. Bullard Company Dba Ed Bullard Co), BT135 (E. D. Bullard Company Dba Ed Bullard Co).
There are 2 known substitutes for 4240-01-421-3669: 5915-00-512-6617, 5950-00-794-5878. Verify interchangeability with system specifications before substitution.
Key specifications for BT135: End Item Identification: RESPIRATOR, E.D. BULLARD COMPANY, SERIES M45; Special Features: 0.500 IN. INDUSTRIAL INTERCHANGE FITTING; BREATHING TUBE WITH CONSTANT AIRFLOW VALVE; SOLE SOURCE REQUIRED BY STATUTE 6.302; COMPONENT OF NIOSH APPROVAL TC-19C-322 AND 321 IN. 2 total characteristics are documented in the Federal Logistics Information System.