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Technical Data Sheet
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6278X1 — UNLOADER ASSEMBLY,VALVE

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

6278X1: UNLOADER ASSEMBLY,VALVE.

The UNLOADER ASSEMBLY,VALVE is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 4310-00-489-5910, 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
6278X1
NSN: 4310-00-489-5910
FSC: 4310 — Compressors and Vacuum Pumps
CAGE: 49576 — QUINCY COMPRESSOR DIVISION OF COLTEC INDUSTRIES INC DBA QUINCY COMPRESSOR DIV QUINCY COMPRESSOR (USA)
SPECIFICATIONS
general_characteristics_item_descriptionBRASS; SPRING LOADED;2 CONNECTIONS 180 DEG APART;1/8-27 NPT RH FEMALE;FLANGE MTD;2 IN.SQ;4 MTG HOLES;0.280 IN. DIA;1-9/16 IN.C TO CALONG THE LG. IN
NSN4310-00-489-5910
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available UNLOADER ASSEMBLY,VALVE TITLE COMPONENT PN 6278X1 MFR UNLOADER ASSEMBLY,VALV
KEY FEATURES
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GENERAL CHARACTERISTICS ITEM DESCRIPTION: BRASS; SPRING LOADED;2 CONNECTIONS 180 DEG APART;1/8-27 NPT RH FEMALE;FLANGE MTD;2 IN.SQ;4 MTG HOLES;0.280 IN. DIA;1-9/16 IN.C TO CALONG THE LG. IN
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTIONBRASS; SPRING LOADED;2 CONNECTIONS 180 DEG APART;1/8-27 NPT RH FEMALE;FLANGE MTD;2 IN.SQ;4 MTG HOLES;0.280 IN. DIA;1-9/16 IN.C TO CALONG THE LG. IN
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 6278X1?
6278X1 is a UNLOADER ASSEMBLY,VALVE.
What is the NSN for 6278X1?
6278X1 is cataloged in the U.S. Government catalog under NSN 4310-00-489-5910. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.