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Technical Data Sheet
PartsTable / COMPONENT / 1056439
1056439 ✓ 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 NOSEPIECE,OXYGEN MASK is a the manufacturer industrial component. Key specifications include special_features: TUBE-PROBE, end_item_identification: KGN; ANALYZER,GAS; E/I FSCM 62170. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4320-01-121-0718, 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
1056439
NSN: 4320-01-121-0718
FSC: 4320
CAGE: 71431 — A W CHESTERTON CO DIV SEALING DEVICE DIVISION (USA)
SPECIFICATIONS
special_featuresTUBE-PROBE
end_item_identificationKGN; ANALYZER,GAS; E/I FSCM 62170
NSN4320-01-121-0718
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available NOSEPIECE,OXYGEN MASK TITLE COMPONENT PN 1056439 MFR NOSEPIECE,OXYGEN MASK
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
56439Interchangeable
interchangeable cross-reference
interchangeable
5.00006.459.2Interchangeable
interchangeable cross-reference
interchangeable
5-6-459-2Interchangeable
interchangeable cross-reference
interchangeable
5-6-459Interchangeable
interchangeable cross-reference
interchangeable
53-039Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1056439?
1056439 is a NOSEPIECE,OXYGEN MASK.
What parts can replace 1056439?
There are 5 known substitutes for 1056439: 56439, 5.00006.459.2, 5-6-459-2 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1056439?
1056439 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4320-01-121-0718. 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