PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

ST54-N-55-40-20-00-20-00-00-00-0Breathing Apparatus,self-Contain

Avon Protection Systems Incorporated Dba Avon Protection Systems Inc · NSN 4240-01-717-9360 · FSC 4240 · No Item Name Available
Verified by PartsTable
NSN 4240-01-717-9360 — this item is cataloged by the U.S. Government under National Stock Number 4240-01-717-9360. Primary manufacturer part number: ST54-N-55-40-20-00-20-00-00-00-0.
Features
  • Breathing Apparatus,self-Contain — FSC 4240
  • 2 verified cross-references
  • Primary manufacturer: Avon Protection Systems Incorporated Dba Avon Protection Systems Inc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Breathing Apparatus,self-Contain, cataloged under National Stock Number 4240-01-717-9360, 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 Avon Protection Systems Incorporated Dba Avon Protection Systems Inc. This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameBreathing Apparatus,self-Contain
FSC / FSG4240 — No Item Name Available (FSG 42)
ManufacturersEdgewood Chemical Biological Center Ecbc (CAGE 81361); Avon Protection Systems Incorporated Dba Avon Protection Systems Inc (CAGE 1LEW5)
Technical Specifications
ParameterValue
NSN4240-01-717-9360
Primary Part NumberST54-N-55-40-20-00-20-00-00-00-0
Item NameBreathing Apparatus,self-Contain
FSC / FSG4240 / 42 — No Item Name Available
ManufacturerAvon Protection Systems Incorporated Dba Avon Protection Systems Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5330-00-099-108624851 INTERCHANGEABLE
Gasket
Dana Automotive Systems Group, Llc Dba Dana Sealing Products
2520-00-815-19775-1-4381 INTERCHANGEABLE
Flange,companion,vehicular Unive
Dana Corp Spicer Transmission Div
5962-01-500-327751438-1 INTERCHANGEABLE
Microcircuit,digital
Raytheon Company
Cross-Reference Index
Part NumberManufacturer
5-1-4381 Edgewood Chemical Biological Center Ecbc (USA)
ST54-N-55-40-20-00-20-00-00-00-0 PRIMARY Avon Protection Systems Incorporated Dba Avon Protection Systems Inc (USA)
Related Parts
5330-00-099-1086INTERCHANGEABLE
GASKET
24851
2520-00-815-1977INTERCHANGEABLE
FLANGE,COMPANION,VEHICULAR UNIVE
5-1-4381
5962-01-500-3277INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
51438-1

Frequently Asked Questions

What is NSN 4240-01-717-9360?

NSN 4240-01-717-9360 is a Breathing Apparatus,self-Contain, manufactured by Avon Protection Systems Incorporated Dba Avon Protection Systems Inc, classified under FSC 4240 (No Item Name Available). Status: active.

What are the part numbers for NSN 4240-01-717-9360?

NSN 4240-01-717-9360 has 2 cross-referenced part numbers: 5-1-4381 (Edgewood Chemical Biological Center Ecbc), ST54-N-55-40-20-00-20-00-00-00-0 (Avon Protection Systems Incorporated Dba Avon Protection Systems Inc).

What NSN replaces 4240-01-717-9360?

There are 3 known substitutes for 4240-01-717-9360: 5330-00-099-1086, 2520-00-815-1977, 5962-01-500-3277. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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