PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 21-4550-20
21-4550-20 ✓ Verified by PartsTable
— · PSU
WHAT YOU NEED TO KNOW
Always quote matching pair — mixed wattage causes throttling Platinum/Titanium = higher efficiency = lower power cost over time
AC or DC input? Verify customer site power
PRODUCT OVERVIEW

The POWER SUPPLY is a the manufacturer power supply unit built for continuous operation in enterprise server and storage platforms. Key specifications include material: STEEL OVERALL, body_length: 0.460 INCHES NOMINAL IN, connection_style: PLAIN, style_designator: PLUG, MAGNETIC, thread_direction: RIGHT-HAND EXTERNAL, magnet_lift_rating: 4.0 OUNCES OZ. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6130-01-089-9646, 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
21-4550-20
NSN: 6130-01-089-9646
FSC: 6130
CAGE: 02KE8 — DSK ENGINEERING AND TECHNOLOGY INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
body_length0.460 INCHES NOMINAL IN
connection_stylePLAIN
style_designatorPLUG, MAGNETIC
thread_directionRIGHT-HAND EXTERNAL
magnet_lift_rating4.0 OUNCES OZ
nominal_thread_size0.375 INCHES EXTERNAL IN
magnet_projection_length0.360 INCHES NOMINAL IN
thread_series_designatorNPTF EXTERNAL
nondefinitive_spec/std_data2 TYPE
material_document_and_classificationQQ-S-633,CANCELED FED SPEC SINGLE MATERIAL RESPONSE OR QQ-S-681 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN6130-01-089-9646
COMPONENT DIAGRAM
PULL TAB AIRFLOW —W PLATINUM 100-240V~ 50/60Hz OEM BACKPLANE CONN ~200 mm HOT-PLUG POWER SUPPLY | —W | Platinum AC input 100-240V | Redundant pair required | Match wattage in same chassis TITLE PSU —W PN 21-4550-20 MFR OEM Platinum
TYPICAL APPLICATIONS
  • Server power supply replacement (failed or degraded)
  • Redundant power upgrade for high-availability
  • Power capacity upgrade for GPU or expansion configurations
  • Hot-swap power maintenance in production environments
  • Spare inventory for break-fix operations
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
1313955Interchangeable
interchangeable cross-reference
interchangeable
501Z9AQInterchangeable
interchangeable cross-reference
interchangeable
5032041Interchangeable
interchangeable cross-reference
interchangeable
HY-4550-20G1Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 21-4550-20?
21-4550-20 is a POWER SUPPLY.
What parts can replace 21-4550-20?
There are 4 known substitutes for 21-4550-20: 1313955, 501Z9AQ, 5032041 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 21-4550-20?
21-4550-20 is cataloged in the Federal Logistics Information System (FLIS) under NSN 6130-01-089-9646. 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