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PartsTable / COMPONENT / FILTER WELD NO. 11
FILTER WELD NO. 11 ✓ 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 part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4240-00-540-2421, 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. 11
NSN: 4240-00-540-2421
FSC: 4240
CAGE: 88309 — AEARO COMPANY (USA)
SPECIFICATIONS
Part NumberFILTER WELD NO. 11
NSN4240-00-540-2421
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available Lens,helmet,welder's TITLE COMPONENT PN FILTER WELD NO. 11 MFR Lens,helmet,welder's
KEY FEATURES
•
DEPARTURE FROM CITED DESIGNATOR: AS MODIFIED BY NATIONAL BUREAU OF STANDARDS SHADE NUMBER
•
MATERIAL: GLASS OR PLASTIC
•
LENS TYPE: FILTER
•
NATIONAL BUREAU OF STANDARDS SHADE NUMBER: CO-BS 11
•
NONDEFINITIVE SPEC/STD DATA: A STYLE AND III TYPE
TECHNICAL CHARACTERISTICS (FLIS)
DEPARTURE FROM CITED DESIGNATORAS MODIFIED BY NATIONAL BUREAU OF STANDARDS SHADE NUMBER
OVERALL WIDTH2.000 INCHES NOMINAL IN
MATERIALGLASS OR PLASTIC
LENS TYPEFILTER
NATIONAL BUREAU OF STANDARDS SHADE NUMBERCO-BS 11
NONDEFINITIVE SPEC/STD DATAA STYLE AND III TYPE
OVERALL LENGTH4.250 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 27
8855800002-1Interchangeable
interchangeable cross-reference
interchangeable
M11Interchangeable
interchangeable cross-reference
interchangeable
SM-695AInterchangeable
interchangeable cross-reference
interchangeable
2004801Interchangeable
interchangeable cross-reference
interchangeable
MODEL M11Interchangeable
interchangeable cross-reference
interchangeable
TK-KG 12-7490-411Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is FILTER WELD NO. 11?
FILTER WELD NO. 11 is a Lens,helmet,welder's.
What parts can replace FILTER WELD NO. 11?
There are 27 known substitutes for FILTER WELD NO. 11: 8855800002-1, M11, SM-695A and 24 more. Substitute compatibility should be verified for your specific system.
Is FILTER WELD NO. 11 still available?
FILTER WELD NO. 11 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026