PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

128215Regulator,breathing Gas Pressure

Aqualung Usa, Inc · NSN 4220-01-676-6903 · FSC 4220 · No Item Name Available
Verified by PartsTable
NSN 4220-01-676-6903 — this item is cataloged by the U.S. Government under National Stock Number 4220-01-676-6903. Primary manufacturer part number: 128215.
Features
  • Regulator,breathing Gas Pressure — 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 Regulator,breathing Gas Pressure, cataloged under National Stock Number 4220-01-676-6903, 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4220-01-676-6903
Primary Part Number128215
Item NameRegulator,breathing Gas Pressure
FSC / FSG4220 / 42 — No Item Name Available
ManufacturerAqualung Usa, Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
3020-00-125-6517T001128215 INTERCHANGEABLE
Gear,spur
The Hellan Strainer Co Div Sister Company of Cleveland Gear, Subs. of Industrial Mfg. C
5935-01-125-5876 INTERCHANGEABLE
Cover,electrical Connector
2520-01-309-2964128219 INTERCHANGEABLE
Disk,clutch,vehicular
Eaton Corp Clutch Div
Cross-Reference Index
Part NumberManufacturer
128215 PRIMARY Aqualung Usa, Inc (USA)
Related Parts
3020-00-125-6517INTERCHANGEABLE
GEAR,SPUR
T001128215
5935-01-125-5876INTERCHANGEABLE
COVER,ELECTRICAL CONNECTOR
2520-01-309-2964INTERCHANGEABLE
DISK,CLUTCH,VEHICULAR
128219

Frequently Asked Questions

What is NSN 4220-01-676-6903?

NSN 4220-01-676-6903 is a Regulator,breathing Gas Pressure, manufactured by Aqualung Usa, Inc, classified under FSC 4220 (No Item Name Available). Status: active.

What are the part numbers for NSN 4220-01-676-6903?

NSN 4220-01-676-6903 has 1 cross-referenced part number: 128215 (Aqualung Usa, Inc).

What NSN replaces 4220-01-676-6903?

There are 3 known substitutes for 4220-01-676-6903: 3020-00-125-6517, 5935-01-125-5876, 2520-01-309-2964. Verify interchangeability with system specifications before substitution.

What are the specifications of 128215?

Key specifications for 128215: Part Name Assigned by Controlling Agency: REGULATOR. 1 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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