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PartsTable / COMPONENT / FILTER WELD NO. 3
FILTER WELD NO. 3 ✓ 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 4240-00-540-2426, 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
FILTER WELD NO. 3
NSN: 4240-00-540-2426
FSC: 4240
CAGE: 88309 — AEARO COMPANY (USA)
SPECIFICATIONS
Part NumberFILTER WELD NO. 3
NSN4240-00-540-2426
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available Lens,helmet,welder's TITLE COMPONENT PN FILTER WELD NO. 3 MFR Lens,helmet,welder's
KEY FEATURES
•
NATIONAL BUREAU OF STANDARDS SHADE NUMBER: CO-BS 5
•
MATERIAL: GLASS
•
LENS TYPE: FILTER
•
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)
NATIONAL BUREAU OF STANDARDS SHADE NUMBERCO-BS 5
MATERIALGLASS
LENS TYPEFILTER
OVERALL WIDTH2.000 INCHES NOMINAL IN
DEPARTURE FROM CITED DESIGNATORAS MODIFIED BY NATIONAL BUREAU OF STANDARDS SHADE NUMBER
NONDEFINITIVE SPEC/STD DATAA STYLE AND III TYPE
OVERALL LENGTH4.250 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
50P5Interchangeable
interchangeable cross-reference
interchangeable
633390-10Interchangeable
interchangeable cross-reference
interchangeable
RAD64005000Interchangeable
interchangeable cross-reference
interchangeable
64005000Interchangeable
interchangeable cross-reference
interchangeable
5424T35Interchangeable
Lens,helmet,welder's
interchangeable
M5Interchangeable
Lens,helmet,welder's
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is FILTER WELD NO. 3?
FILTER WELD NO. 3 is a Lens,helmet,welder's.
What parts can replace FILTER WELD NO. 3?
There are 12 known substitutes for FILTER WELD NO. 3: 50P5, 633390-10, RAD64005000 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for FILTER WELD NO. 3?
FILTER WELD NO. 3 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4240-00-540-2426. 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