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PartsTable / COMPONENT / MONARCH NO. 7
MONARCH NO. 7 ✓ Verified by PartsTable
— · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The Lens,helmet,welder's is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4240-00-540-2423, indicating validated use in U.S.

government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
MONARCH NO. 7
NSN: 4240-00-540-2423
FSC: 4240
CAGE: 22166 — FIBRE-METAL PRODUCTS CO INC (USA)
SPECIFICATIONS
Part NumberMONARCH NO. 7
NSN4240-00-540-2423
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available Lens,helmet,welder's TITLE COMPONENT PN MONARCH NO. 7 MFR Lens,helmet,welder's
KEY FEATURES
•
MATERIAL: GLASS
•
LENS TYPE: FILTER
•
NATIONAL BUREAU OF STANDARDS SHADE NUMBER: CO-BS 7
•
DEPARTURE FROM CITED DESIGNATOR: AS MODIFIED BY NATIONAL BUREAU OF STANDARDS SHADE NUMBER
•
NONDEFINITIVE SPEC/STD DATA: A STYLE AND III TYPE
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALGLASS
OVERALL WIDTH2.000 INCHES NOMINAL IN
LENS TYPEFILTER
NATIONAL BUREAU OF STANDARDS SHADE NUMBERCO-BS 7
DEPARTURE FROM CITED DESIGNATORAS MODIFIED BY NATIONAL BUREAU OF STANDARDS SHADE NUMBER
OVERALL LENGTH4.250 INCHES NOMINAL IN
NONDEFINITIVE SPEC/STD DATAA STYLE AND III TYPE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
201090800Interchangeable
interchangeable cross-reference
interchangeable
7160003Interchangeable
interchangeable cross-reference
interchangeable
M7Interchangeable
interchangeable cross-reference
interchangeable
4CR8YY4A3Interchangeable
interchangeable cross-reference
interchangeable
M7PLANInterchangeable
interchangeable cross-reference
interchangeable
R89Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MONARCH NO. 7?
MONARCH NO. 7 is a Lens,helmet,welder's.
What parts can replace MONARCH NO. 7?
There are 15 known substitutes for MONARCH NO. 7: 201090800, 7160003, M7 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MONARCH NO. 7?
MONARCH NO. 7 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4240-00-540-2423. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026