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301556 — DISK DRIVE UNIT

✓ Government record, cited
— · STORAGE_HDD · 3.5_SATA_HDD
PRODUCT OVERVIEW

301556: DISK DRIVE UNIT.

The DISK DRIVE UNIT is a the manufacturer hard disk drive designed for enterprise environments demanding consistent performance and data integrity. Key specifications include material: STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316 OVERALL, drive_size: 2.50, head_style: HEXAGON, design_type: HARD DISK, head_height: 0.150 INCHES MINIMUM AND 0.163 INCHES MAXIMUM IN, unit_design: PORTABLE. This part is cataloged in the U.S.

Government catalog under NSN 5305-00-702-4523, 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
STORAGE_HDD→ 3.5_SATA_HDD→ 301556
NSN: 5305-00-702-4523
NIINs: 007024523, 016162953
FSC: 5305 — Screws
CAGE: H0G87 — WIBA ZEVENAAR B.V. (NLD)
SPECIFICATIONS
materialSTEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316 OVERALL
drive_size2.50
head_styleHEXAGON
design_typeHARD DISK
head_height0.150 INCHES MINIMUM AND 0.163 INCHES MAXIMUM IN
unit_designPORTABLE
power_sourceEXTERNAL
thread_class2A A
overall_width3.400 INCHES NOMINAL IN
thread_length0.750 INCHES MAXIMUM IN
drive_quantity1
overall_height0.750 INCHES NOMINAL IN
NSN5305-00-702-4523
COMPONENT DIAGRAM
RELEASE LATCH — NL-SAS 7.2K 301556 OEM NL-SAS INTERFACE INTERPOSER SAS drive in SATA tray? Check board compatibility 3.5" (101.6 x 146mm) LFF 3.5" DRIVE | — | NL-SAS 7.2K NL-SAS uses SAS protocol at 7.2K RPM | SAS backplane supports SATA, not reverse Tray generation matters | Gen8 LFF tray differs from Gen10 TITLE LFF 3.5" DRIVE PN 301556 MFR OEM
KEY FEATURES
•
HEAD HEIGHT: 0.150 INCHES MINIMUM AND 0.163 INCHES MAXIMUM IN
•
FASTENER LENGTH: 0.750 INCHES NOMINAL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD LENGTH: 0.750 INCHES MAXIMUM IN
•
CRITICALITY CODE JUSTIFICATION: CQBC
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD ALL MATERIAL RESPONSES OVERALL
•
NOMINAL THREAD DIAMETER: 0.250 INCHES IN
•
HEAD STYLE: HEXAGON
TYPICAL APPLICATIONS
  • Enterprise storage arrays and SANs
  • Direct-attached storage (DAS) expansion
  • Database tier storage (OLTP, OLAP)
  • Virtual machine datastore expansion
  • Backup-to-disk and disaster recovery targets
  • Content delivery and media streaming storage
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.150 INCHES MINIMUM AND 0.163 INCHES MAXIMUM IN
FASTENER LENGTH0.750 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD LENGTH0.750 INCHES MAXIMUM IN
CRITICALITY CODE JUSTIFICATIONCQBC
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD ALL MATERIAL RESPONSES OVERALL
NOMINAL THREAD DIAMETER0.250 INCHES IN
HEAD STYLEHEXAGON
THREAD DIRECTIONRIGHT-HAND
WIDTH BETWEEN FLATS0.428 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 10
82-2063-0075Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
32018-006-AKReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
0716814Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
9316A540Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
MS35307-6Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
28307Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 301556?
301556 is a DISK DRIVE UNIT. It is classified as a STORAGE_HDD (3.5_SATA_HDD).
What parts can replace 301556?
There are 10 known substitutes for 301556: 82-2063-0075, 32018-006-AK, 0716814 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 301556?
301556 is cataloged in the U.S. Government catalog under NSN 5305-00-702-4523. 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.