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GCU20/A ✓ 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 GCU20/A 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 1660-00-079-4359, 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
GCU20/A
NSN: 1660-00-079-4359
FSC: 1660
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
Part NumberGCU20/A
NSN1660-00-079-4359
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available GCU20/A TITLE COMPONENT PN GCU20/A MFR GCU20/A
KEY FEATURES
•
REFERENCE DATA AND LITERATURE: T.O. 15X2-7-2-4
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: 300 PSI,OPERATING PRESSURE; 75 L PER MIN,OUTPUT CAPACITY; W/PRESSURE OPENING-PRESSURE CLOSING VALVE; 2 RELIEF VALVES; W/CHECK VALVE; W/PRESSURE GAGE; W/CAPACITANCE GAGING ELEMENT; BASE MTG; OVER-ALL DIMENSIONS,23.500 IN. LG,21.000 IN. PLUS OR MINUS .031 IN. DIA,24.000 IN. DEEP; W/O SPARE PARTS IN
TECHNICAL CHARACTERISTICS (FLIS)
REFERENCE DATA AND LITERATURET.O. 15X2-7-2-4
GENERAL CHARACTERISTICS ITEM DESCRIPTION300 PSI,OPERATING PRESSURE; 75 L PER MIN,OUTPUT CAPACITY; W/PRESSURE OPENING-PRESSURE CLOSING VALVE; 2 RELIEF VALVES; W/CHECK VALVE; W/PRESSURE GAGE; W/CAPACITANCE GAGING ELEMENT; BASE MTG; OVER-ALL DIMENSIONS,23.500 IN. LG,21.000 IN. PLUS OR MINUS .031 IN. DIA,24.000 IN. DEEP; W/O SPARE PARTS IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
M25666/6Interchangeable
interchangeable cross-reference
interchangeable
GCU20/AInterchangeable
interchangeable cross-reference
interchangeable
8148650Interchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-25666/6Interchangeable
interchangeable cross-reference
interchangeable
MIL-C-27652Interchangeable
interchangeable cross-reference
interchangeable
10C0012-75Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is GCU20/A?
GCU20/A is a GCU20/A.
What parts can replace GCU20/A?
There are 7 known substitutes for GCU20/A: M25666/6, GCU20/A, 8148650 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for GCU20/A?
GCU20/A is cataloged in the Federal Logistics Information System (FLIS) under NSN 1660-00-079-4359. 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