PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

103703Parts Kit,breathing Apparatus

Aqualung Usa, Inc · NSN 4220-01-689-4271 · FSC 4220 · No Item Name Available
Verified by PartsTable
NSN 4220-01-689-4271 — this item is cataloged by the U.S. Government under National Stock Number 4220-01-689-4271. Primary manufacturer part number: 103703.
Features
  • Parts Kit,breathing Apparatus — FSC 4220
  • 1 verified cross-reference
  • Primary manufacturer: Aqualung Usa, Inc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Parts Kit,breathing Apparatus, cataloged under National Stock Number 4220-01-689-4271, is classified within Federal Supply Class 4220 (No Item Name Available) of the Fire Fighting, Rescue, and Safety Equipment group. The primary manufacturer of record is Aqualung Usa, Inc. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4220-01-689-4271
Primary Part Number103703
Item NameParts Kit,breathing Apparatus
FSC / FSG4220 / 42 — No Item Name Available
ManufacturerAqualung Usa, Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
9905-00-130-6046103703 INTERCHANGEABLE
Plate,identification
Astronautics Corporation of America
5315-00-987-7175103703 INTERCHANGEABLE
Pin,support
Air Systems Components Inc Dba Air System Components Inc Div Trion Iaq Div
5895-01-114-6081 INTERCHANGEABLE
Amplifier-Power Supply
5895-01-138-0449 INTERCHANGEABLE
Amplifier-Power Supply
1680-01-479-6143 INTERCHANGEABLE
Transducer
1680-01-566-0679103703-2 INTERCHANGEABLE
Control Assembly,push-Pull
Bae Systems Land & Armaments L.p.
4240-01-698-4795103703 INTERCHANGEABLE
Valve,breathing Apparatus
Stained Glass of Hanover Inc
Cross-Reference Index
Part NumberManufacturer
103703 PRIMARY Aqualung Usa, Inc (USA)
Related Parts
9905-00-130-6046INTERCHANGEABLE
PLATE,IDENTIFICATION
103703
5315-00-987-7175INTERCHANGEABLE
PIN,SUPPORT
103703
5895-01-114-6081INTERCHANGEABLE
AMPLIFIER-POWER SUPPLY
5895-01-138-0449INTERCHANGEABLE
AMPLIFIER-POWER SUPPLY
1680-01-479-6143INTERCHANGEABLE
TRANSDUCER
1680-01-566-0679INTERCHANGEABLE
CONTROL ASSEMBLY,PUSH-PULL
103703-2
4240-01-698-4795INTERCHANGEABLE
VALVE,BREATHING APPARATUS
103703

Frequently Asked Questions

What is NSN 4220-01-689-4271?

NSN 4220-01-689-4271 is a Parts Kit,breathing Apparatus, manufactured by Aqualung Usa, Inc, classified under FSC 4220 (No Item Name Available). Status: active.

What are the part numbers for NSN 4220-01-689-4271?

NSN 4220-01-689-4271 has 1 cross-referenced part number: 103703 (Aqualung Usa, Inc).

What NSN replaces 4220-01-689-4271?

There are 7 known substitutes for 4220-01-689-4271: 9905-00-130-6046, 5315-00-987-7175, 5895-01-114-6081 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 103703?

Key specifications for 103703: End Item Identification: EMERGENCY BREATHING INFLATION SYSTEM (EBIS 4500); Part Name Assigned by Controlling Agency: FIRST STAGE KIT. 2 total characteristics are documented in the Federal Logistics Information System.

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