PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

BT102Hose,air Duct,air Breathing

E. D. Bullard Company Dba Ed Bullard Co · NSN 4240-01-421-3668 · FSC 4240 · No Item Name Available
Verified by PartsTable
NSN 4240-01-421-3668 — this item is cataloged by the U.S. Government under National Stock Number 4240-01-421-3668. Primary manufacturer part number: BT102.
Features
  • Hose,air Duct,air Breathing — FSC 4240
  • 2 verified cross-references
  • Primary manufacturer: E. D. Bullard Company Dba Ed Bullard Co
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
General Description

The Hose,air Duct,air Breathing, cataloged under National Stock Number 4240-01-421-3668, 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. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4240-01-421-3668
Primary Part NumberBT102
Item NameHose,air Duct,air Breathing
FSC / FSG4240 / 42 — No Item Name Available
ManufacturerE. D. Bullard Company Dba Ed Bullard Co
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
5120-00-180-0905402 INTERCHANGEABLE
Clamp,c
Diecraft Inc
3455-00-224-373210305 INTERCHANGEABLE
Cutter,milling,end
Union Butterfield Corp P O Box 9000 Crystal Lake Il 60039
6625-00-241-2311BT-102 INTERCHANGEABLE
Test Set,battery
Hoyt Electrical Instrument Works, Inc. Dba Hoyt Electrical Instrument Works Inc
5940-00-283-5280MS25036-106 INTERCHANGEABLE
Terminal,lug
Sae International Dba Sae International
5945-00-374-1689B10.2 INTERCHANGEABLE
Relay,thermal
Schneider Electric Usa, Inc.
3120-00-842-1363B10-2 INTERCHANGEABLE
Bearing,sleeve
Roller Bearing Co of America, Inc Div Pic Design
6210-01-122-8808 INTERCHANGEABLE
Cover
5310-01-381-9630 INTERCHANGEABLE
Nut,plain,hexagon
5998-01-442-3830B102 INTERCHANGEABLE
Circuit Card Assembly
Lockheed Martin Corp Dba Lockheed Martin Div Mst - Eagan
5340-01-696-9341B-102 INTERCHANGEABLE
Bumper
Blue Moon Designs, Llc Dba Blue Moon Designs
Cross-Reference Index
Part NumberManufacturer
B102 E. D. Bullard Company Dba Ed Bullard Co (USA)
BT102 PRIMARY E. D. Bullard Company Dba Ed Bullard Co (USA)
Related Parts
5120-00-180-0905INTERCHANGEABLE
CLAMP,C
402
3455-00-224-3732INTERCHANGEABLE
CUTTER,MILLING,END
10305
6625-00-241-2311INTERCHANGEABLE
TEST SET,BATTERY
BT-102
5940-00-283-5280INTERCHANGEABLE
TERMINAL,LUG
MS25036-106
5945-00-374-1689INTERCHANGEABLE
RELAY,THERMAL
B10.2
3120-00-842-1363INTERCHANGEABLE
BEARING,SLEEVE
B10-2
6210-01-122-8808INTERCHANGEABLE
COVER
5310-01-381-9630INTERCHANGEABLE
NUT,PLAIN,HEXAGON
5998-01-442-3830INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
B102
5340-01-696-9341INTERCHANGEABLE
BUMPER
B-102

Frequently Asked Questions

What is NSN 4240-01-421-3668?

NSN 4240-01-421-3668 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.

What are the part numbers for NSN 4240-01-421-3668?

NSN 4240-01-421-3668 has 2 cross-referenced part numbers: B102 (E. D. Bullard Company Dba Ed Bullard Co), BT102 (E. D. Bullard Company Dba Ed Bullard Co).

What NSN replaces 4240-01-421-3668?

There are 10 known substitutes for 4240-01-421-3668: 5120-00-180-0905, 3455-00-224-3732, 6625-00-241-2311 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of BT102?

Key specifications for BT102: Special Features: 0.250 IN. SNAP-TITE STEEL FITTING; BREATHING TUBE WITH ADJUSTABLE FLOW VALVE; SOLE SOURCE REQUIRED BY STATUTE 6.302; COMPONENT OF NIOSH APPROVAL TC-19C-322 AND 321 IN; End Item Identification: RESPIRATOR, E.D. BULLARD COMPANY, SERIES M45. 2 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com