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PartsTable / COMPONENT / 81-77
81-77 ✓ 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 SEMICONDUCTOR DEVICE,DIODE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, block_type: REGULAR, duty_cycle: CONTINUOUS, load_rating: 30000.0 POUNDS MAXIMUM LBS, bearing_type: ROLLER, current_type: AC INPUT. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 2825-00-388-6906, 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
81-77
NSN: 2825-00-388-6906
FSC: 2825
CAGE: 90099 — NORTHROP GRUMMAN SYSTEMS CORPORATION DIV MARINE SYSTEMS (USA)
SPECIFICATIONS
materialSTEEL OVERALL
block_typeREGULAR
duty_cycleCONTINUOUS
load_rating30000.0 POUNDS MAXIMUM LBS
bearing_typeROLLER
current_typeAC INPUT
overall_width2.875 INCHES IN
overall_height3.750 INCHES IN
overall_length4.250 INCHES IN
sheave_quantity1
actuation_methodCAM INTERNAL
application_typeDRY
NSN2825-00-388-6906
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SEMICONDUCTOR DEVICE,DIODE TITLE COMPONENT PN 81-77 MFR SEMICONDUCTOR DEVICE,D
TECHNICAL CHARACTERISTICS (FLIS)
END ITEM IDENTIFICATIONSTEAM TURBINE,SHIPS PROPULSION SYSTEM
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
8-403Interchangeable
interchangeable cross-reference
interchangeable
8-177Interchangeable
interchangeable cross-reference
interchangeable
D1-2563Interchangeable
interchangeable cross-reference
interchangeable
913020-024Interchangeable
interchangeable cross-reference
interchangeable
418Interchangeable
interchangeable cross-reference
interchangeable
677Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 81-77?
81-77 is a SEMICONDUCTOR DEVICE,DIODE.
What parts can replace 81-77?
There are 9 known substitutes for 81-77: 8-403, 8-177, D1-2563 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 81-77?
81-77 is cataloged in the Federal Logistics Information System (FLIS) under NSN 2825-00-388-6906. 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