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Technical Data Sheet
PartsTable / MRO / B1016055
B1016055 ✓ Verified by PartsTable
— · MRO · MRO_GENERAL
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 BLOCK,TELEPHONE PROTECTOR is a the manufacturer industrial component. Key specifications include shape: CYLINDRICAL, material: CARBON, overall_length: 0.650 INCHES NOMINAL IN, overall_diameter: 0.500 INCHES NOMINAL IN, special_features: ONE SLOTTED HEAD SCREW; 7/16 X 20 IN. THD IN, circuit_protector_block_location: ABOVE GROUND SIDE.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5920-00-521-8331, 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
MRO→ MRO_GENERAL→ B1016055
NSN: 5920-00-521-8331
FSC: 5920
CAGE: 28528 — ITT INDUSTRIES INC ITT AEROSPACE COMMUNICATIONS DIV EAST (USA)
SPECIFICATIONS
shapeCYLINDRICAL
materialCARBON
overall_length0.650 INCHES NOMINAL IN
overall_diameter0.500 INCHES NOMINAL IN
special_featuresONE SLOTTED HEAD SCREW; 7/16 X 20 IN. THD IN
circuit_protector_block_locationABOVE GROUND SIDE
NSN5920-00-521-8331
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available BLOCK,TELEPHONE PROTECTOR TITLE COMPONENT PN B1016055 MFR BLOCK,TELEPHONE PROTEC
KEY FEATURES
•
OVERALL DIAMETER: 0.500 INCHES NOMINAL IN
•
CIRCUIT PROTECTOR BLOCK LOCATION: ABOVE GROUND SIDE
•
MATERIAL: CARBON
•
SHAPE: CYLINDRICAL
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL LENGTH0.650 INCHES NOMINAL IN
OVERALL DIAMETER0.500 INCHES NOMINAL IN
CIRCUIT PROTECTOR BLOCK LOCATIONABOVE GROUND SIDE
MATERIALCARBON
SPECIAL FEATURESONE SLOTTED HEAD SCREW; 7/16 X 20 IN. THD IN
SHAPECYLINDRICAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
107CInterchangeable
interchangeable cross-reference
interchangeable
127-B-06Interchangeable
interchangeable cross-reference
interchangeable
1412380Interchangeable
interchangeable cross-reference
interchangeable
Y22016Interchangeable
interchangeable cross-reference
interchangeable
1077Interchangeable
interchangeable cross-reference
interchangeable
504-801-001Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B1016055?
B1016055 is a BLOCK,TELEPHONE PROTECTOR. It is classified as a MRO (MRO_GENERAL).
What parts can replace B1016055?
There are 14 known substitutes for B1016055: 107C, 127-B-06, 1412380 and 11 more. Substitute compatibility should be verified for your specific system.
Is B1016055 still available?
B1016055 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026