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3J2B1A — INDICATOR,LIQUID QUANTITY

✓ Government record, cited
SETRA SYSTEMS, INC. DBA GEMS SENSORS · COMPONENT
PRODUCT OVERVIEW

3J2B1A: INDICATOR,LIQUID QUANTITY.

The INDICATOR,LIQUID QUANTITY is a SETRA SYSTEMS, INC. DBA GEMS SENSORS industrial component. Key specifications include LENGTH: 10.25 INCHES NOMINAL IN, MATERIAL: IRON CAST CASE, PRESENTATION TYPE: CATHODE RAY TUBE, MOUNTING STUD DIAMETER: 1.0 INCHES NOMINAL IN, END ITEM IDENTIFICATION: MISSILE, MOUNTING FACILITY TYPE AND QUANTITY: 2 THREADED STUD(S).

This part is cataloged in the U.S. Government catalog under NSN 6680-01-661-4545, 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
3J2B1A
NSN: 6680-01-661-4545
FSC: 6680 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments
CAGE: 04034 — SETRA SYSTEMS, INC. DBA GEMS SENSORS (USA)
SPECIFICATIONS
LENGTH10.25 INCHES NOMINAL IN
MATERIALIRON CAST CASE
PRESENTATION TYPECATHODE RAY TUBE
MOUNTING STUD DIAMETER1.0 INCHES NOMINAL IN
END ITEM IDENTIFICATIONMISSILE
MOUNTING FACILITY TYPE AND QUANTITY2 THREADED STUD(S)
PART NAME ASSIGNED BY CONTROLLING AGENCYELECTRODE
NSN6680-01-661-4545
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR MFR: SETRA SYSTEMS, INC. DBA GEMS SENSORS INDICATOR,LIQUID QUANTITY TITLE COMPONENT PN 3J2B1A MFR SETRA SYSTEMS, INC. DBA GEMS SENSORS INDICATOR,LIQUID QUANT
KEY FEATURES
•
MOUNTING FACILITY TYPE AND QUANTITY: 2 THREADED STUD(S)
•
LENGTH: 10.25 INCHES NOMINAL IN
•
MOUNTING STUD DIAMETER: 1.0 INCHES NOMINAL IN
•
PRESENTATION TYPE: CATHODE RAY TUBE
•
MATERIAL: IRON CAST CASE
TECHNICAL CHARACTERISTICS
MOUNTING FACILITY TYPE AND QUANTITY2 THREADED STUD(S)
LENGTH10.25 INCHES NOMINAL IN
MOUNTING STUD DIAMETER1.0 INCHES NOMINAL IN
PRESENTATION TYPECATHODE RAY TUBE
PART NAME ASSIGNED BY CONTROLLING AGENCYELECTRODE
END ITEM IDENTIFICATIONMISSILE
MATERIALIRON CAST CASE
OTHER ITEMS IN FSC 6680 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
6680-00-000-0189 6680-00-001-1478 6680-00-001-1502 6680-00-001-1506 6680-00-001-1511 6680-00-001-3672 6680-00-001-3675 6680-00-001-4170
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 3J2B1A?
3J2B1A is a INDICATOR,LIQUID QUANTITY manufactured by SETRA SYSTEMS, INC. DBA GEMS SENSORS.
What is the NSN for 3J2B1A?
3J2B1A is cataloged in the U.S. Government catalog under NSN 6680-01-661-4545. 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.