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Technical Data Sheet
PartsTable / COMPONENT / 21-2-42021
21-2-42021 ✓ 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 21-2-42021 is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6645-00-445-8143, 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
21-2-42021
NSN: 6645-00-445-8143
FSC: 6645
CAGE: 26992 — HAMILTON WATCH CO INC (USA)
SPECIFICATIONS
Part Number21-2-42021
NSN6645-00-445-8143
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available 21-2-42021 TITLE COMPONENT PN 21-2-42021 MFR 21-2-42021
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
818365-00Interchangeable
interchangeable cross-reference
interchangeable
42021Interchangeable
interchangeable cross-reference
interchangeable
157D1-1357Interchangeable
interchangeable cross-reference
interchangeable
41132Interchangeable
interchangeable cross-reference
interchangeable
W56Interchangeable
interchangeable cross-reference
interchangeable
41728Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 21-2-42021?
21-2-42021 is a 21-2-42021.
What parts can replace 21-2-42021?
There are 16 known substitutes for 21-2-42021: 818365-00, 42021, 157D1-1357 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 21-2-42021?
21-2-42021 is cataloged in the Federal Logistics Information System (FLIS) under NSN 6645-00-445-8143. 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