PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

SR2Regulator,breathing Gas Pressure

Sherwood Scuba · NSN 4220-01-643-7815 · FSC 4220 · No Item Name Available
Verified by PartsTable
NSN 4220-01-643-7815 — this item is cataloged by the U.S. Government under National Stock Number 4220-01-643-7815. Primary manufacturer part number: SR2.
Features
  • Regulator,breathing Gas Pressure — FSC 4220
  • 1 verified cross-reference
  • Primary manufacturer: Sherwood Scuba
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 4220-01-643-7815, 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 Sherwood Scuba. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameRegulator,breathing Gas Pressure
FSC / FSG4220 — No Item Name Available (FSG 42)
ManufacturersSherwood Scuba (CAGE 590B3)
Technical Specifications
ParameterValue
NSN4220-01-643-7815
Primary Part NumberSR2
Item NameRegulator,breathing Gas Pressure
FSC / FSG4220 / 42 — No Item Name Available
ManufacturerSherwood Scuba
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
3110-00-227-3498136317 INTERCHANGEABLE
Bearing,ball,annular
Kearfott Corporation Div Guidance and Navigation Division
3110-00-227-478128965-10-7S INTERCHANGEABLE
Bearing,ball,annular
Triumph Engine Control Systems Llc
5365-00-339-2706BS636APC363 INTERCHANGEABLE
Bushing,lever
Circor Naval Solutions Llc Dba Warren Pumps
5961-00-974-4467 INTERCHANGEABLE
Semiconductor Device,diode
3110-01-073-4671SR2 INTERCHANGEABLE
Bearing,ball,annular
Schaeffler Aerospace Usa Corp Div Schaeffler Aerospace Usa Corporation
5985-01-074-4309D1-413A2 INTERCHANGEABLE
Switch,radio Frequency Transmiss
Ducommun Labarge Technologies, Inc Dba Ducommun Labarge Technologies, Inc
5940-01-148-3545 INTERCHANGEABLE
Splice,conductor
7310-01-239-4541SR-2 INTERCHANGEABLE
Scale,portion
Edlund Co Inc
5340-01-346-2010592-6383531-1 INTERCHANGEABLE
Buckle
Naval Sea Systems Command
1680-01-500-5234SR-2 INTERCHANGEABLE
Drum,winch,aircraft
Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
Cross-Reference Index
Part NumberManufacturer
SR2 PRIMARY Sherwood Scuba (USA)
Related Parts
3110-00-227-3498INTERCHANGEABLE
BEARING,BALL,ANNULAR
136317
3110-00-227-4781INTERCHANGEABLE
BEARING,BALL,ANNULAR
28965-10-7S
5365-00-339-2706INTERCHANGEABLE
BUSHING,LEVER
BS636APC363
5961-00-974-4467INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
3110-01-073-4671INTERCHANGEABLE
BEARING,BALL,ANNULAR
SR2
5985-01-074-4309INTERCHANGEABLE
SWITCH,RADIO FREQUENCY TRANSMISS
D1-413A2
5940-01-148-3545INTERCHANGEABLE
SPLICE,CONDUCTOR
7310-01-239-4541INTERCHANGEABLE
SCALE,PORTION
SR-2
5340-01-346-2010INTERCHANGEABLE
BUCKLE
592-6383531-1
1680-01-500-5234INTERCHANGEABLE
DRUM,WINCH,AIRCRAFT
SR-2
6515-01-532-9034INTERCHANGEABLE
RETRACTOR,CHEEK
SR2
5998-01-618-9796INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
104114

Frequently Asked Questions

What is NSN 4220-01-643-7815?

NSN 4220-01-643-7815 is a Regulator,breathing Gas Pressure, manufactured by Sherwood Scuba, classified under FSC 4220 (No Item Name Available). Status: active.

What are the part numbers for NSN 4220-01-643-7815?

NSN 4220-01-643-7815 has 1 cross-referenced part number: SR2 (Sherwood Scuba).

What NSN replaces 4220-01-643-7815?

There are 12 known substitutes for 4220-01-643-7815: 3110-00-227-3498, 3110-00-227-4781, 5365-00-339-2706 and 9 more. Verify interchangeability with system specifications before substitution.

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