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Technical Data Sheet
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77-0021 — Technical Data Sheet

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— · 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 PAD,TRACK,SHOE is a the manufacturer industrial component. Key specifications include end_item_identification: 4220-01-005-0773,BUOYANCY COMPENSATOR. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 2530-01-130-3366, 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
77-0021
NSN: 2530-01-130-3366
FSC: 2530
CAGE: G0528 — ELYN A.B.E.E (GRC)
SPECIFICATIONS
end_item_identification4220-01-005-0773,BUOYANCY COMPENSATOR
NSN2530-01-130-3366
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available PAD,TRACK,SHOE TITLE COMPONENT PN 77-0021 MFR PAD,TRACK,SHOE
TECHNICAL CHARACTERISTICS
END ITEM IDENTIFICATION2530-01-130-3366;2530-00-088-9531;2530-01-130-3366
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
80EA1C1F2WWL17N16DECIMAL0CTALInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
1233-7InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
20665001-7InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
125696InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
210-1227-00InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
5702-234-48InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 77-0021?
77-0021 is a PAD,TRACK,SHOE.
What parts can replace 77-0021?
There are 20 known substitutes for 77-0021: 80EA1C1F2WWL17N16DECIMAL0CTAL, 1233-7, 20665001-7 and 17 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 77-0021?
77-0021 is cataloged in the Federal Logistics Information System under NSN 2530-01-130-3366. 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: September 2026