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Technical Data Sheet
PartsTable / STORAGE_HDD / G-549
G-549 ✓ Verified by PartsTable
— · STORAGE_HDD · 2.5_SAS_HDD
WHAT YOU NEED TO KNOW
SAS HDD backplane accepts SATA drives, SATA backplane does NOT accept SAS 2.5" SAS HDDs come with or without carrier/tray — ALWAYS ASK
ALWAYS confirm carrier/tray PN — server-specific trays vary by generation
PRODUCT OVERVIEW

IBM 900GB 10K SAS 6GBPS 2.5'' HARD DRIVE. Key specifications include material: IRON CAST, taper_length: 1.000 INCHES NOMINAL IN, aa_end_radius: 0.031 INCHES NOMINAL IN, bore_diameter: 0.4340 INCHES MINIMUM AND 0.4350 INCHES MAXIMUM IN, overall_length: 3.500 INCHES NOMINAL IN, bore_counterbore: NOT INCLUDED. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4310-00-139-5423, 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→ 2.5_SAS_HDD→ G-549
NSN: 4310-00-139-5423
FSC: 4310
CAGE: 59505 — NEWPORT SCIENTIFIC, INC. (USA)
SPECIFICATIONS
materialIRON CAST
taper_length1.000 INCHES NOMINAL IN
aa_end_radius0.031 INCHES NOMINAL IN
bore_diameter0.4340 INCHES MINIMUM AND 0.4350 INCHES MAXIMUM IN
overall_length3.500 INCHES NOMINAL IN
bore_counterboreNOT INCLUDED
bore_countersinkNOT INCLUDED
outside_diameter0.657 INCHES MINIMUM AND 0.658 INCHES MAXIMUM IN
style_designatorPLAIN-TAPERED SHANK END
taper_minor_diameter0.593 INCHES NOMINAL IN
criticality_code_justificationZZZY
general_characteristics_item_descriptionAMERICAN INSTRUMENT CO INC,PART NO. G5-49-1
NSN4310-00-139-5423
COMPONENT DIAGRAM
LABEL 900GB HDD SAS 6Gb/s 69.85 mm (2.75") 100.0 mm 2.5" HDD — MECHANICAL Spinning disk, hot-swap SAS 6Gb/s — Dual-port 900GB | 7200 / 10K / 15K RPM FORM FACTOR — 2.5" Hot-swap, carrier-specific MOUNTING — 4x M3 bottom Standard SFF screw pattern TITLE HDD DRIVE PN G-549 MFR IBM 900GB 10K SAS 6GBPS 2.5'' HARD DRIVE
KEY FEATURES
•
SAS 6Gb/s Interface
•
900GB Capacity
•
10K RPM Speed
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: AMERICAN INSTRUMENT CO INC,PART NO. G5-49-1
•
CRITICALITY CODE JUSTIFICATION: ZZZY
•
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS: CLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D
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 (FLIS)
GENERAL CHARACTERISTICS ITEM DESCRIPTIONAMERICAN INSTRUMENT CO INC,PART NO. G5-49-1
CRITICALITY CODE JUSTIFICATIONZZZY
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSCLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
VG378Interchangeable
interchangeable cross-reference
interchangeable
5215120Interchangeable
interchangeable cross-reference
interchangeable
G9549Interchangeable
interchangeable cross-reference
interchangeable
G-803Interchangeable
interchangeable cross-reference
interchangeable
G-549Interchangeable
interchangeable cross-reference
interchangeable
G5-49-1Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is G-549?
G-549 is a IBM 900GB 10K SAS 6GBPS 2.5'' HARD DRIVE. It is classified as a STORAGE_HDD (2.5_SAS_HDD).
What parts can replace G-549?
There are 9 known substitutes for G-549: VG378, 5215120, G9549 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for G-549?
G-549 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4310-00-139-5423. 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