PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

220-125Regulator,two Stage

Morpho Detection, Llc · NSN 6665-01-288-5520 · FSC 6665 · No Item Name Available
Verified by PartsTable
NSN 6665-01-288-5520 — this item is cataloged by the U.S. Government under National Stock Number 6665-01-288-5520. Primary manufacturer part number: 220-125.
Features
  • Regulator,two Stage — FSC 6665
  • 2 verified cross-references
  • Primary manufacturer: Morpho Detection, Llc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Regulator,two Stage, cataloged under National Stock Number 6665-01-288-5520, is classified within Federal Supply Class 6665 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Morpho Detection, Llc. This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameRegulator,two Stage
FSC / FSG6665 — No Item Name Available (FSG 66)
ManufacturersMorpho Detection, Llc (CAGE 55503)
Technical Specifications
ParameterValue
NSN6665-01-288-5520
Primary Part Number220-125
Item NameRegulator,two Stage
FSC / FSG6665 / 66 — No Item Name Available
ManufacturerMorpho Detection, Llc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5935-00-262-5173 INTERCHANGEABLE
Polarizing Key,electrical Connec
2990-00-799-0819220125 INTERCHANGEABLE
Retainer,flybalance
Essex Industries, Inc. Dba Essex Industries
5330-01-132-65333-905 NBR INTERCHANGEABLE
Packing,preformed
Parker-Hannifin Corp Div O-Ring Division
7643-01-405-19862201 25 INTERCHANGEABLE
Topographic Geospatial Products
National Geospatial-Intelligence Agency Etds Mailstop J 21
Cross-Reference Index
Part NumberManufacturer
220-125 Morpho Detection, Llc (USA)
P97233 Morpho Detection, Llc (USA)
Related Parts
5935-00-262-5173INTERCHANGEABLE
POLARIZING KEY,ELECTRICAL CONNEC
2990-00-799-0819INTERCHANGEABLE
RETAINER,FLYBALANCE
220125
5330-01-132-6533INTERCHANGEABLE
PACKING,PREFORMED
3-905 NBR
7643-01-405-1986INTERCHANGEABLE
TOPOGRAPHIC GEOSPATIAL PRODUCTS
2201 25

Frequently Asked Questions

What is NSN 6665-01-288-5520?

NSN 6665-01-288-5520 is a Regulator,two Stage, manufactured by Morpho Detection, Llc, classified under FSC 6665 (No Item Name Available). Status: active.

What are the part numbers for NSN 6665-01-288-5520?

NSN 6665-01-288-5520 has 2 cross-referenced part numbers: 220-125 (Morpho Detection, Llc), P97233 (Morpho Detection, Llc).

What NSN replaces 6665-01-288-5520?

There are 4 known substitutes for 6665-01-288-5520: 5935-00-262-5173, 2990-00-799-0819, 5330-01-132-6533 and 1 more. Verify interchangeability with system specifications before substitution.

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