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421-0306 — 421-0306

✓ Government record, cited
— · MRO · MRO_GENERAL
PRODUCT OVERVIEW

421-0306: 421-0306.

The 421-0306 is a the manufacturer industrial component. Key specifications include unit_type: STANDARD, overall_width: 19.000 INCHES NOMINAL IN, overall_height: 8.750 INCHES NOMINAL IN, overall_length: 18.000 INCHES NOMINAL IN, mounting_method: RACK, frequency_rating: 48.0 HERTZ MINIMUM AND 440.0 HERTZ MAXIMUM. This part is cataloged in the U.S.

Government catalog under NSN 6625-00-359-1927, 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→ 421-0306
NSN: 6625-00-359-1927
FSC: 6625 — Electrical and Electronic Properties Measuring and Testing Instruments
CAGE: A486G — NIMIKKEISTOKESKUS NCB FINLAND (FIN)
SPECIFICATIONS
unit_typeSTANDARD
overall_width19.000 INCHES NOMINAL IN
overall_height8.750 INCHES NOMINAL IN
overall_length18.000 INCHES NOMINAL IN
mounting_methodRACK
frequency_rating48.0 HERTZ MINIMUM AND 440.0 HERTZ MAXIMUM
ac_voltage_rating100.0 VOLTS MINIMUM AND 240.0 VOLTS MAXIMUM
frequency_range_rating+0.005 TO 50.000 KILOHERTZ
input_impedance_rating1.0 MEGOHMS NOMINAL
NSN6625-00-359-1927
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available 421-0306 TITLE COMPONENT PN 421-0306 MFR 421-0306
KEY FEATURES
•
AC VOLTAGE RATING: 100.0 VOLTS MINIMUM AND 240.0 VOLTS MAXIMUM
•
MOUNTING METHOD: RACK
•
FREQUENCY RANGE RATING: +0.005 TO 50.000 KILOHERTZ
•
UNIT TYPE: STANDARD
•
FREQUENCY RATING: 48.0 HERTZ MINIMUM AND 440.0 HERTZ MAXIMUM
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT8.750 INCHES NOMINAL IN
AC VOLTAGE RATING100.0 VOLTS MINIMUM AND 240.0 VOLTS MAXIMUM
MOUNTING METHODRACK
OVERALL LENGTH18.000 INCHES NOMINAL IN
OVERALL WIDTH19.000 INCHES NOMINAL IN
FREQUENCY RANGE RATING+0.005 TO 50.000 KILOHERTZ
UNIT TYPESTANDARD
FREQUENCY RATING48.0 HERTZ MINIMUM AND 440.0 HERTZ MAXIMUM
INPUT IMPEDANCE RATING1.0 MEGOHMS NOMINAL
SUBSTITUTES & CROSS-REFERENCES 3
3580AReference document
Same NSN cross-reference
Reference document — Design control — primary reference
8812899000Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
91569791Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedDemilitarization required — critical (Q)
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FREQUENTLY ASKED QUESTIONS
What is 421-0306?
421-0306 is a 421-0306. It is classified as a MRO (MRO_GENERAL).
What parts can replace 421-0306?
There are 3 known substitutes for 421-0306: 3580A, 8812899000, 91569791. Substitute compatibility should be verified for your specific system.
What is the NSN for 421-0306?
421-0306 is cataloged in the U.S. Government catalog under NSN 6625-00-359-1927. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.