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PartsTable / COMPONENT / 21043-4
21043-4 ✓ 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 CONVERTER,LIQUID OXYGEN is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY OVERALL, nut_style: KNURLED, nut_diameter: 0.380 INCHES NOMINAL IN, thread_class: 2B, nut_thickness: 0.520 INCHES NOMINAL IN, thread_series: UNS. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 1660-00-445-9384, 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
21043-4
NSN: 1660-00-445-9384
FSC: 1660
CAGE: 04577 — MISSION SYSTEMS ORCHARD PARK INC (USA)
SPECIFICATIONS
materialALUMINUM ALLOY OVERALL
nut_styleKNURLED
nut_diameter0.380 INCHES NOMINAL IN
thread_class2B
nut_thickness0.520 INCHES NOMINAL IN
thread_seriesUNS
thread_directionRIGHT-HAND
nominal_thread_size0.188 INCHES IN
thread_quantity_per_inch32
NSN1660-00-445-9384
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CONVERTER,LIQUID OXYGEN TITLE COMPONENT PN 21043-4 MFR CONVERTER,LIQUID OXYGE
KEY FEATURES
•
NONDEFINITIVE SPEC/STD DATA: GCU12/A TYPE
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: 70 PSI,OPERATING PRESSURE; AMBIENT AIR METHOD OF OXYGEN WARMING; 72 L PER MIN,OUTPUT CAPACITY; W/PRESSURE OPENING-PRESSURE CLOSING VALVE; 1 RELIEF VALVE; W/CHECK VALVE; W/O PRESSURE GAGE; W/CAPACITANCE GAGING ELEMENT; HANGER MTG; O/A DIM.,12.813 IN. LG,11.625 IN.W,9.938 IN. DEEP; W/O SPARE PARTS IN
TECHNICAL CHARACTERISTICS (FLIS)
NONDEFINITIVE SPEC/STD DATAGCU12/A TYPE
GENERAL CHARACTERISTICS ITEM DESCRIPTION70 PSI,OPERATING PRESSURE; AMBIENT AIR METHOD OF OXYGEN WARMING; 72 L PER MIN,OUTPUT CAPACITY; W/PRESSURE OPENING-PRESSURE CLOSING VALVE; 1 RELIEF VALVE; W/CHECK VALVE; W/O PRESSURE GAGE; W/CAPACITANCE GAGING ELEMENT; HANGER MTG; O/A DIM.,12.813 IN. LG,11.625 IN.W,9.938 IN. DEEP; W/O SPARE PARTS IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
2-10433Interchangeable
interchangeable cross-reference
interchangeable
654157-11Interchangeable
interchangeable cross-reference
interchangeable
29061A4Interchangeable
interchangeable cross-reference
interchangeable
MIL-C-25973Interchangeable
interchangeable cross-reference
interchangeable
10C0021-5Interchangeable
interchangeable cross-reference
interchangeable
GCU12A/AInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 21043-4?
21043-4 is a CONVERTER,LIQUID OXYGEN.
What parts can replace 21043-4?
There are 13 known substitutes for 21043-4: 2-10433, 654157-11, 29061A4 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 21043-4?
21043-4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 1660-00-445-9384. 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