PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

520-004Lens,diver's Mask

Kirby Morgan Dive Systems Inc · NSN 4220-01-185-1615 · FSC 4220 · No Item Name Available
Verified by PartsTable
NSN 4220-01-185-1615 — this item is cataloged by the U.S. Government under National Stock Number 4220-01-185-1615. Primary manufacturer part number: 520-004.
Features
  • Lens,diver's Mask — FSC 4220
  • 6 verified cross-references
  • Primary manufacturer: Kirby Morgan Dive Systems Inc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Lens,diver's Mask, cataloged under National Stock Number 4220-01-185-1615, 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 Kirby Morgan Dive Systems Inc. This item has 6 commercial cross-references from 5 manufacturers, 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 NameLens,diver's Mask
FSC / FSG4220 — No Item Name Available (FSG 42)
ManufacturersKirby Morgan Dive Systems Inc (CAGE 58366); Zf Industrieantriebe Witten Gmbh (CAGE D9182); Nimikkeistokeskus Ncb Finland (CAGE A486G); Jfd Australia Pty Ltd James Fisher Australia Pty Ltd (CAGE Z01M1); Jfd Ltd (CAGE U9992)
Technical Specifications
ParameterValue
NSN4220-01-185-1615
Primary Part Number520-004
Item NameLens,diver's Mask
FSC / FSG4220 / 42 — No Item Name Available
ManufacturerKirby Morgan Dive Systems Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4820-00-036-1750005-101-0012 INTERCHANGEABLE
Disk,valve
Anderson Greenwood Lp Dba Anderson Greenwood Crosby
6240-00-155-8707 INTERCHANGEABLE
Lamp,incandescent
5905-00-158-4615L50J2K5 INTERCHANGEABLE
Resistor,fixed,wire Wound
Ohmite Holding, L.l.c. Dba Ohmite Manufacturing
4820-00-360-40661819 INTERCHANGEABLE
Seat,valve
Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor
5360-00-536-7305116341819356 INTERCHANGEABLE
Spring,helical,compression
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
5120-00-610-1888 INTERCHANGEABLE
Extractor Set,screw
5340-00-766-9057TA1718SS03T INTERCHANGEABLE
Clamp,loop
Ta Aerospace Co Div Ta Aerospace
5330-00-835-5091 INTERCHANGEABLE
Gasket
5905-00-855-3715 INTERCHANGEABLE
Resistor,fixed,wire Wound,induct
5331-00-906-1616 INTERCHANGEABLE
O-Ring
Cross-Reference Index
Part NumberManufacturer
18-19 Kirby Morgan Dive Systems Inc (USA)
592-6318150 Zf Industrieantriebe Witten Gmbh (DEU)
10382462 Nimikkeistokeskus Ncb Finland (FIN)
520-004 PRIMARY Kirby Morgan Dive Systems Inc (USA)
DE012 Jfd Australia Pty Ltd James Fisher Australia Pty Ltd (AUS)
DE012 Jfd Ltd (GBR)
Related Parts
4820-00-036-1750INTERCHANGEABLE
DISK,VALVE
005-101-0012
6240-00-155-8707INTERCHANGEABLE
LAMP,INCANDESCENT
5905-00-158-4615INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND
L50J2K5
4820-00-360-4066INTERCHANGEABLE
SEAT,VALVE
1819
5360-00-536-7305INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
116341819356
5120-00-610-1888INTERCHANGEABLE
EXTRACTOR SET,SCREW
5340-00-766-9057INTERCHANGEABLE
CLAMP,LOOP
TA1718SS03T
5330-00-835-5091INTERCHANGEABLE
GASKET
5905-00-855-3715INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND,INDUCT
5331-00-906-1616INTERCHANGEABLE
O-RING
4820-01-030-1657INTERCHANGEABLE
VALVE,BLEEDER,HYDRAULIC SYSTEM
1838-015-01
5340-01-218-4373INTERCHANGEABLE
STANDOFF,THREADED,SPACING
411750

Frequently Asked Questions

What is NSN 4220-01-185-1615?

NSN 4220-01-185-1615 is a Lens,diver's Mask, manufactured by Kirby Morgan Dive Systems Inc, classified under FSC 4220 (No Item Name Available). Status: active.

What are the part numbers for NSN 4220-01-185-1615?

NSN 4220-01-185-1615 has 6 cross-referenced part numbers: 18-19 (Kirby Morgan Dive Systems Inc), 592-6318150 (Zf Industrieantriebe Witten Gmbh), 10382462 (Nimikkeistokeskus Ncb Finland), 520-004 (Kirby Morgan Dive Systems Inc), DE012 (Jfd Australia Pty Ltd James Fisher Australia Pty Ltd) and 1 more.

What NSN replaces 4220-01-185-1615?

There are 12 known substitutes for 4220-01-185-1615: 4820-00-036-1750, 6240-00-155-8707, 5905-00-158-4615 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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