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Technical Data Sheet
1551B ✓ Verified by PartsTable
· COMPONENT
WHAT YOU NEED TO KNOW
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Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

PARTS KIT,PRESSURE REGULATING VA. Key specifications include material: COPPER ALLOY 360 OVERALL, nut_style: HEXAGON, nut_height: 0.375 INCHES NOMINAL IN, thread_class: 2B, thread_series: UNIFIED NATIONAL COARSE (UNC), overall_height: 2.300 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6625-00-893-0230, 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
1551B
NSN: 6625-00-893-0230
FSC: 6625
CAGE: 24655 — GENRAD INC (USA)
SPECIFICATIONS
materialCOPPER ALLOY 360 OVERALL
nut_styleHEXAGON
nut_height0.375 INCHES NOMINAL IN
thread_class2B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
overall_height2.300 INCHES NOMINAL IN
overall_diameter4.000 INCHES NOMINAL IN
special_featuresUNIPOLAR SENSOR, DUAL CHAMBER
thread_directionRIGHT-HAND
surface_treatmentCADMIUM AND CHROMATE OVERALL
width_across_flats0.188 INCHES NOMINAL IN
nominal_thread_size0.112 INCHES IN
NSN6625-00-893-0230
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available PARTS KIT,PRESSURE REGULATING VA TITLE COMPONENT PN 1551B MFR PARTS KIT,PRESSURE REG
TECHNICAL CHARACTERISTICS (FLIS)
SPECIAL FEATURESFREQ RANGE,20 HZ TO 20 KHZ W/2 DB RESPONSE OVER ENTIRE RANGE; DB CALIBRATION,FROM P 24 TO P 150 RANGE IN U,PORM 1 DB ACCURACY; INPUT 1 MICROPHONE 25 MEGO IMPEDANCE; OUTPUT 1 INDICATING METER; OPERATING PWR DC TWO 1.5 V SIZE D BATTERIES,ONE 67.5 V BATTERY; INT BATTERY SOURCE; MAJ COMPONENTS 1 EA PWR CORD GENL RADIO CO P/N CAP-11,TEL PLUG GENL RADIO CO TYPE 274 KHz
SPECIAL FEATURESFREQ RANGE,20 HZ TO 20 KHZ W/2 DB RESPONSE OVER ENTIRE RANGE; DB CALIBRATION,FROM P 24 TO P 150 RANGE IN U,PORM 1 DB ACCURACY; INPUT 1 MICROPHONE 25 MEGO IMPEDANCE; OUTPUT 1 INDICATING METER; OPERATING PWR DC TWO 1.5 V SIZE D BATTERIES,ONE 67.5 V BATTERY; INT BATTERY SOURCE; MAJ COMPONENTS 1 EA PWR CORD GENL RADIO CO P/N CAP-11,TEL PLUG GENL RADIO CO TYPE 274 KHz
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
8096710Interchangeable
interchangeable cross-reference
interchangeable
1551BInterchangeable
interchangeable cross-reference
interchangeable
278/720Interchangeable
interchangeable cross-reference
interchangeable
221-0577-00Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1551B?
1551B is a PARTS KIT,PRESSURE REGULATING VA.
What parts can replace 1551B?
There are 4 known substitutes for 1551B: 8096710, 1551B, 278/720 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1551B?
1551B is cataloged in the Federal Logistics Information System (FLIS) under NSN 6625-00-893-0230. This indicates validated use in U.S. government and defense supply chains.
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